Taliban kill IS leader behind Kabul airport bombing
The Islamic State group mastermind thought to have planned the devastating 2021 bombing at Kabul airport has been killed by Afghanistan's ruling Taliban, US officials say.
The bombing that August killed 170 civilians and 13 US soldiers as people were trying to flee the country as the Taliban took control.
The IS figure was killed weeks ago but it took time to confirm his death, US officials told BBC news partner CBS.
His name has not been released.
US officials said they had determined through intelligence gathering and monitoring of the region that the leader had died, though they did not provide further details on how they had learned that he was responsible for the bombing. read more
The Islamic State group mastermind thought to have planned the devastating 2021 bombing at Kabul airport has been killed by Afghanistan's ruling Taliban, US officials say.
The bombing that August killed 170 civilians and 13 US soldiers as people were trying to flee the country as the Taliban took control.
The IS figure was killed weeks ago but it took time to confirm his death, US officials told BBC news partner CBS.
His name has not been released.
US officials said they had determined through intelligence gathering and monitoring of the region that the leader had died, though they did not provide further details on how they had learned that he was responsible for the bombing. read more
US and South Korea agree key nuclear weapons deal
The US and South Korea have secured a landmark deal to counter the North Korean nuclear threat.
Washington has agreed to periodically deploy US nuclear-armed submarines to South Korea and involve Seoul in its nuclear planning operations.
In return, South Korea has agreed to not develop its own nuclear weapons.
The Washington Declaration will strengthen the allies' co-operation in deterring a North Korean attack, US President Joe Biden said.
Concern has been rising on both sides about the nuclear threat posed by North Korea. Pyongyang is developing tactical nuclear weapons that can target South Korea, and refining its long-range weapons that can reach the US mainland. read more
The US and South Korea have secured a landmark deal to counter the North Korean nuclear threat.
Washington has agreed to periodically deploy US nuclear-armed submarines to South Korea and involve Seoul in its nuclear planning operations.
In return, South Korea has agreed to not develop its own nuclear weapons.
The Washington Declaration will strengthen the allies' co-operation in deterring a North Korean attack, US President Joe Biden said.
Concern has been rising on both sides about the nuclear threat posed by North Korea. Pyongyang is developing tactical nuclear weapons that can target South Korea, and refining its long-range weapons that can reach the US mainland. read more
Ukraine war: Bakhmut defenders worry about losing support
A year ago Volodymyr and his men were firing all 40 barrels of their BM-21 Grad rocket launcher in one go. Now they can only afford to fire a few at a time at Russian targets.
"We haven't got enough ammunition for our weapon," he explains.
His unit, the 17th Tank Battalion, is still being called on to provide fire support to Ukrainian forces desperately clinging on to the edges of Bakhmut, the eastern Ukrainian city which Russia has spent months trying to capture.
Russian forces are getting ever closer to their goal of taking the city, but at enormous cost.
While we're waiting in a line of trees, hidden from view, Volodymyr receives a call to fire his rocket launcher at a Russian mortar position about 15 kilometres away. read more
A year ago Volodymyr and his men were firing all 40 barrels of their BM-21 Grad rocket launcher in one go. Now they can only afford to fire a few at a time at Russian targets.
"We haven't got enough ammunition for our weapon," he explains.
His unit, the 17th Tank Battalion, is still being called on to provide fire support to Ukrainian forces desperately clinging on to the edges of Bakhmut, the eastern Ukrainian city which Russia has spent months trying to capture.
Russian forces are getting ever closer to their goal of taking the city, but at enormous cost.
While we're waiting in a line of trees, hidden from view, Volodymyr receives a call to fire his rocket launcher at a Russian mortar position about 15 kilometres away. read more
US and South Korea agree key nuclear weapons deal
The US and South Korea have secured a landmark deal to counter the North Korean nuclear threat.
Washington has agreed to periodically deploy US nuclear-armed submarines to South Korea and involve Seoul in its nuclear planning operations.
In return, South Korea has agreed to not develop its own nuclear weapons.
The Washington Declaration will strengthen the allies' co-operation in deterring a North Korean attack, US President Joe Biden said.
Concern has been rising on both sides about the nuclear threat posed by North Korea. Pyongyang is developing tactical nuclear weapons that can target South Korea, and refining its long-range weapons that can reach the US mainland. read more
The US and South Korea have secured a landmark deal to counter the North Korean nuclear threat.
Washington has agreed to periodically deploy US nuclear-armed submarines to South Korea and involve Seoul in its nuclear planning operations.
In return, South Korea has agreed to not develop its own nuclear weapons.
The Washington Declaration will strengthen the allies' co-operation in deterring a North Korean attack, US President Joe Biden said.
Concern has been rising on both sides about the nuclear threat posed by North Korea. Pyongyang is developing tactical nuclear weapons that can target South Korea, and refining its long-range weapons that can reach the US mainland. read more
Palestinians condemn EU's von der Leyen for 'racist trope'
Palestinians have described remarks about Israel by the head of the European Commission as "inappropriate, false and discriminatory".
It follows a congratulatory video message by Ursula von der Leyen on Israel's Independence Day on Wednesday.
In it she praised Israel, including for having "made the desert bloom".
It has sparked an unusual diplomatic spat between the Palestinian Authority (PA) and the European Union (EU), its main donor.
A spokesperson for the commission told the BBC: "The EU is unpleasantly surprised by the inappropriate statement of the Palestinian foreign ministry accusing the president of the European Commission of racism." read more
Palestinians have described remarks about Israel by the head of the European Commission as "inappropriate, false and discriminatory".
It follows a congratulatory video message by Ursula von der Leyen on Israel's Independence Day on Wednesday.
In it she praised Israel, including for having "made the desert bloom".
It has sparked an unusual diplomatic spat between the Palestinian Authority (PA) and the European Union (EU), its main donor.
A spokesperson for the commission told the BBC: "The EU is unpleasantly surprised by the inappropriate statement of the Palestinian foreign ministry accusing the president of the European Commission of racism." read more
Mike Pence testifies in criminal probe of Trump and Capitol riot
Former US Vice-President Mike Pence has testified as part of a criminal investigation into alleged efforts by Donald Trump to overturn his defeat in the 2020 election.
Mr Pence, 63, sat for more than seven hours before a federal grand jury in Washington DC, sources told the BBC's US partner CBS News.
He was issued with a subpoena to testify under oath earlier this year.
The questioning by prosecutors took place behind closed doors.
His appearance on Thursday came just hours after an appeals court rejected a last-ditch bid by Mr Trump's legal team to stop Mr Pence from testifying.
Mr Pence's lawyers had also sought unsuccessfully to challenge the subpoena, arguing that his role as president of the Senate during his time in office meant he had congressional immunity.
read more
Former US Vice-President Mike Pence has testified as part of a criminal investigation into alleged efforts by Donald Trump to overturn his defeat in the 2020 election.
Mr Pence, 63, sat for more than seven hours before a federal grand jury in Washington DC, sources told the BBC's US partner CBS News.
He was issued with a subpoena to testify under oath earlier this year.
The questioning by prosecutors took place behind closed doors.
His appearance on Thursday came just hours after an appeals court rejected a last-ditch bid by Mr Trump's legal team to stop Mr Pence from testifying.
Mr Pence's lawyers had also sought unsuccessfully to challenge the subpoena, arguing that his role as president of the Senate during his time in office meant he had congressional immunity.
read more
Sudan fighting: No talks until bombing stops, Hemedti tells BBC
One of Sudan's duelling generals, who leads the paramilitary force fighting the country's army, has told the BBC he will not negotiate until fighting ends.
But Gen Mohamed Hamdan Dagalo, better known as Hemedti, said his fighters were being "relentlessly" bombed since a three-day truce had been extended.
"We don't want to destroy Sudan," he said, blaming army chief Gen Abdel Fattah al-Burhan for the violence.
Gen Burhan has tentatively agreed to face-to-face talks in South Sudan.
Thursday night's extension of an uneasy ceasefire followed intensive diplomatic efforts by neighbouring countries, as well as the US, UK and UN. read more
One of Sudan's duelling generals, who leads the paramilitary force fighting the country's army, has told the BBC he will not negotiate until fighting ends.
But Gen Mohamed Hamdan Dagalo, better known as Hemedti, said his fighters were being "relentlessly" bombed since a three-day truce had been extended.
"We don't want to destroy Sudan," he said, blaming army chief Gen Abdel Fattah al-Burhan for the violence.
Gen Burhan has tentatively agreed to face-to-face talks in South Sudan.
Thursday night's extension of an uneasy ceasefire followed intensive diplomatic efforts by neighbouring countries, as well as the US, UK and UN. read more
North Korea warns of serious danger over US-South Korea deterrence deal
North Korean leader Kim Jong-un's powerful sister has warned that a recent US-South Korean deal will lead to a "more serious danger".
Kim Yo-jong said North Korea's nuclear deterrent "should be brought to further perfection", state media reported.
The US agreed to deploy nuclear-armed submarines to South Korea and involve Seoul in its nuclear planning to counter nuclear threats from the North.
In return, South Korea agreed to not develop its own nuclear weapons.
The deal - known as the Washington Declaration - was announced this week during President Joe Biden's talks with his South Korean counterpart Yoon Suk-yeol's in the American capital. read more
North Korean leader Kim Jong-un's powerful sister has warned that a recent US-South Korean deal will lead to a "more serious danger".
Kim Yo-jong said North Korea's nuclear deterrent "should be brought to further perfection", state media reported.
The US agreed to deploy nuclear-armed submarines to South Korea and involve Seoul in its nuclear planning to counter nuclear threats from the North.
In return, South Korea agreed to not develop its own nuclear weapons.
The deal - known as the Washington Declaration - was announced this week during President Joe Biden's talks with his South Korean counterpart Yoon Suk-yeol's in the American capital. read more
Turkey's President Erdogan back on campaign trail after illness
President Recep Tayyip Erdogan reappeared on the campaign trail in western Turkey on Saturday in the flesh, and in thundering form.
He arrived in the port city of Izmir to a sea of flags, and a large crowd that had been waiting hours under a hot sun. It was a strong turnout in an opposition stronghold.
There was no sign of the illness which caused him to drop out of key events for three days this week - just a fortnight ahead of critical elections. The polls - for the presidency and parliament - will be his toughest challenge yet, after twenty years in power.
The president spoke for almost 40 minutes, in a strong voice, mocking the opposition, raising the spectre of "terrorism", and saying only he could deliver growth for Turkey. It was a combative performance which will have reassured his supporters and may have worried his detractors. read more
President Recep Tayyip Erdogan reappeared on the campaign trail in western Turkey on Saturday in the flesh, and in thundering form.
He arrived in the port city of Izmir to a sea of flags, and a large crowd that had been waiting hours under a hot sun. It was a strong turnout in an opposition stronghold.
There was no sign of the illness which caused him to drop out of key events for three days this week - just a fortnight ahead of critical elections. The polls - for the presidency and parliament - will be his toughest challenge yet, after twenty years in power.
The president spoke for almost 40 minutes, in a strong voice, mocking the opposition, raising the spectre of "terrorism", and saying only he could deliver growth for Turkey. It was a combative performance which will have reassured his supporters and may have worried his detractors. read more
Sudan crisis risks becoming a nightmare for the world - former PM Hamdok
The former prime minister of Sudan has warned that the conflict in his country could become worse than those in Syria and Libya.
Abdalla Hamdok said the fighting will be a "nightmare for the world" if it continues.
The Sudanese army says it is attacking the capital Khartoum from all directions, using heavy artillery.
Almost two weeks of fighting has left hundreds dead, while tens of thousands of people are fleeing the country.
Thursday night's extension of an uneasy ceasefire between the rival factions followed intensive diplomatic efforts by neighbouring countries, as well as the US, UK and UN. read more
The former prime minister of Sudan has warned that the conflict in his country could become worse than those in Syria and Libya.
Abdalla Hamdok said the fighting will be a "nightmare for the world" if it continues.
The Sudanese army says it is attacking the capital Khartoum from all directions, using heavy artillery.
Almost two weeks of fighting has left hundreds dead, while tens of thousands of people are fleeing the country.
Thursday night's extension of an uneasy ceasefire between the rival factions followed intensive diplomatic efforts by neighbouring countries, as well as the US, UK and UN. read more
Suspected Islamic State chief Qurayshi killed in Syria, Turkey says
Turkish forces have killed the suspected leader of Islamic State (IS) in Syria, Turkey's President Recep Tayyip Erdogan has announced.
Abu Hussein al-Qurayshi is said to have taken over the group after his predecessor was killed last autumn.
Mr Erdogan told broadcaster TRT Turk the IS leader was "neutralised" in a Turkish MIT intelligence agency operation on Saturday.
IS has so far made no comment on the reported operation.
The BBC has been unable to independently verify President Erdogan's claim.
The MIT intelligence agency had been following Qurayshi for a "long time", Mr Erdogan said. read more
Turkish forces have killed the suspected leader of Islamic State (IS) in Syria, Turkey's President Recep Tayyip Erdogan has announced.
Abu Hussein al-Qurayshi is said to have taken over the group after his predecessor was killed last autumn.
Mr Erdogan told broadcaster TRT Turk the IS leader was "neutralised" in a Turkish MIT intelligence agency operation on Saturday.
IS has so far made no comment on the reported operation.
The BBC has been unable to independently verify President Erdogan's claim.
The MIT intelligence agency had been following Qurayshi for a "long time", Mr Erdogan said. read more
Ukraine war: Russia launches second pre-dawn missile attack in three days
Russia has launched a series of missile and artillery attacks on Ukraine, the second pre-dawn attack in three days.
One person died in Kherson region and 25 people - including three children - were injured in Dnipropetrovsk.
Ukraine's armed forces said 15 of 18 missiles fired were intercepted by the country's air defence.
One of the main targets was the city of Pavlohrad near Dnipro - a Russian-installed official said resources for a Ukrainian offensive were hit.
Writing on Telegram with a thumbs-up gesture, Vladimir Rogov said missiles targeted railway infrastructure and fuel depots.
Nineteen high-rise apartment blocks, 25 private houses, six schools and kindergartens and five shops were also damaged. read more
Russia has launched a series of missile and artillery attacks on Ukraine, the second pre-dawn attack in three days.
One person died in Kherson region and 25 people - including three children - were injured in Dnipropetrovsk.
Ukraine's armed forces said 15 of 18 missiles fired were intercepted by the country's air defence.
One of the main targets was the city of Pavlohrad near Dnipro - a Russian-installed official said resources for a Ukrainian offensive were hit.
Writing on Telegram with a thumbs-up gesture, Vladimir Rogov said missiles targeted railway infrastructure and fuel depots.
Nineteen high-rise apartment blocks, 25 private houses, six schools and kindergartens and five shops were also damaged. read more
Ukraine war: More than 20,000 Russian fighters dead in Bakhmut, US says
The White House believes that more than 20,000 Russian combatants have died in the battle for the Ukrainian city of Bakhmut in the last five months.
A further 80,000 have been wounded, National Security Council spokesman John Kirby said, citing newly declassified intelligence.
Half of the dead are from the Wagner private mercenary company, the US says.
If accurate, the number of Russian casualties outweighs the eastern city's pre-war population of about 70,000.
Moscow has been trying to take Bakhmut since last year in a grinding war of attrition. read more
The White House believes that more than 20,000 Russian combatants have died in the battle for the Ukrainian city of Bakhmut in the last five months.
A further 80,000 have been wounded, National Security Council spokesman John Kirby said, citing newly declassified intelligence.
Half of the dead are from the Wagner private mercenary company, the US says.
If accurate, the number of Russian casualties outweighs the eastern city's pre-war population of about 70,000.
Moscow has been trying to take Bakhmut since last year in a grinding war of attrition. read more
AI 'godfather' Geoffrey Hinton warns of dangers as he quits Google
A man widely seen as the godfather of artificial intelligence (AI) has quit his job, warning about the growing dangers from developments in the field.
Geoffrey Hinton, aged 75, announced his resignation from Google in a statement to the New York Times, saying he now regretted his work.
He told the BBC some of the dangers of AI chatbots were "quite scary".
"Right now, they're not more intelligent than us, as far as I can tell. But I think they soon may be."
Dr Hinton also accepted that his age had played into his decision to leave the tech giant, telling the BBC: "I'm 75, so it's time to retire." read more
A man widely seen as the godfather of artificial intelligence (AI) has quit his job, warning about the growing dangers from developments in the field.
Geoffrey Hinton, aged 75, announced his resignation from Google in a statement to the New York Times, saying he now regretted his work.
He told the BBC some of the dangers of AI chatbots were "quite scary".
"Right now, they're not more intelligent than us, as far as I can tell. But I think they soon may be."
Dr Hinton also accepted that his age had played into his decision to leave the tech giant, telling the BBC: "I'm 75, so it's time to retire." read more
Palestinian Khader Adnan dies in Israel jail after 86 days on hunger strike
A prominent Palestinian prisoner has died in an Israeli jail after 86 days on hunger strike.
Khader Adnan was a senior figure in the militant group Islamic Jihad who Israel had charged with terrorism offences.
The Israel Prison Service said he had refused medical treatment before he was found unconscious in his cell on Tuesday.
Hours after his death, militants fired three rockets from the Gaza Strip towards Israel. No-one was hurt.
The Palestinian prime minister accused Israel of "deliberately assassinating" Adnan, while Islamic Jihad warned Israel that it would pay "the highest price". read more
A prominent Palestinian prisoner has died in an Israeli jail after 86 days on hunger strike.
Khader Adnan was a senior figure in the militant group Islamic Jihad who Israel had charged with terrorism offences.
The Israel Prison Service said he had refused medical treatment before he was found unconscious in his cell on Tuesday.
Hours after his death, militants fired three rockets from the Gaza Strip towards Israel. No-one was hurt.
The Palestinian prime minister accused Israel of "deliberately assassinating" Adnan, while Islamic Jihad warned Israel that it would pay "the highest price". read more
Afghanistan: 'Nothing we can do but watch babies die'
Three-month-old Tayabullah is quiet and motionless. His mother Nigar moves the oxygen pipe away from his nose and puts a finger below his nostrils to check if she can feel him breathing.
She begins to cry as she realises her son is fading.
At this hospital in Afghanistan, there is not a single working ventilator.
Mothers hold oxygen tubes near their babies' noses because masks designed to fit their small faces are not available, and the women are trying to fill in for what trained staff or medical equipment should do.
Every day, 167 children die in Afghanistan from preventable diseases, according to the UN children's fund Unicef - illnesses that could and should be cured with the right medication.
It is a staggering number. But it's an estimate. read more
Three-month-old Tayabullah is quiet and motionless. His mother Nigar moves the oxygen pipe away from his nose and puts a finger below his nostrils to check if she can feel him breathing.
She begins to cry as she realises her son is fading.
At this hospital in Afghanistan, there is not a single working ventilator.
Mothers hold oxygen tubes near their babies' noses because masks designed to fit their small faces are not available, and the women are trying to fill in for what trained staff or medical equipment should do.
Every day, 167 children die in Afghanistan from preventable diseases, according to the UN children's fund Unicef - illnesses that could and should be cured with the right medication.
It is a staggering number. But it's an estimate. read more
Missing Australian fisherman's body found in crocodile
The body of an Australian man who vanished while fishing with friends has been found inside a crocodile.
Kevin Darmody was last seen at Kennedy's Bend - well-known saltwater crocodile habitat in a remote part of northern Queensland - on Saturday.
After a two-day search of the area, police euthanised two large crocodiles and found human remains.
The body is yet be formally identified, but police say it is a "tragic ending" to the search for the 65-year-old.
Mr Darmody was an experienced fisherman and a well-known member of the community in Cape York.
The two crocodiles, which measured 4.1m (13.4 ft) and 2.8m in length, were shot dead on Monday about 1.5 km (0.9 miles) from where he was last seen. read more
The body of an Australian man who vanished while fishing with friends has been found inside a crocodile.
Kevin Darmody was last seen at Kennedy's Bend - well-known saltwater crocodile habitat in a remote part of northern Queensland - on Saturday.
After a two-day search of the area, police euthanised two large crocodiles and found human remains.
The body is yet be formally identified, but police say it is a "tragic ending" to the search for the 65-year-old.
Mr Darmody was an experienced fisherman and a well-known member of the community in Cape York.
The two crocodiles, which measured 4.1m (13.4 ft) and 2.8m in length, were shot dead on Monday about 1.5 km (0.9 miles) from where he was last seen. read more
Kremlin accuses Ukraine of trying to assassinate Putin
Russia says it downed two drones that were targeting the Kremlin in Moscow last night and accused Ukraine of attempting to kill President Vladimir Putin.
The Kremlin said the drones were disabled by special services using electronic radar assets.
Mr Putin was not in the Kremlin at the time, his spokesman Dmitry Peskov told the state news agency, adding there was no material damage to buildings.
Ukraine says it is making no comment.
Unverified footage on Russian social media showed smoke over central Moscow in the early hours of Wednesday.
In a statement, the Kremlin said: "Last night, the Kyiv regime attempted to carry out a strike on the Kremlin residence of the President of the Russian Federation with unmanned aerial vehicles."
It said it regarded this "as a planned terrorist act and an assassination attempt on the president", and Russia "reserves the right to take retaliatory measures wherever and whenever is deemed necessary". read more
Russia says it downed two drones that were targeting the Kremlin in Moscow last night and accused Ukraine of attempting to kill President Vladimir Putin.
The Kremlin said the drones were disabled by special services using electronic radar assets.
Mr Putin was not in the Kremlin at the time, his spokesman Dmitry Peskov told the state news agency, adding there was no material damage to buildings.
Ukraine says it is making no comment.
Unverified footage on Russian social media showed smoke over central Moscow in the early hours of Wednesday.
In a statement, the Kremlin said: "Last night, the Kyiv regime attempted to carry out a strike on the Kremlin residence of the President of the Russian Federation with unmanned aerial vehicles."
It said it regarded this "as a planned terrorist act and an assassination attempt on the president", and Russia "reserves the right to take retaliatory measures wherever and whenever is deemed necessary". read more
Kremlin drone: Zelensky denies Ukraine attacked Putin or Moscow
Ukraine's President Volodymyr Zelensky has denied his country carried out an alleged drone attack on the Kremlin, which Russia says was an attempt on President Vladimir Putin's life.
"We don't attack Putin or Moscow. We fight on on our territory. We are defending our villages and cities," he said, speaking on a visit to Finland.
The Russian president's office said defences downed two drones overnight.
It threatened to retaliate when and where it considered necessary.
Unverified footage circulating online shows smoke rising over the Kremlin - a large government complex in central Moscow - early on Wednesday. A second video shows a small explosion above the site's Senate building, while two men appear to clamber up the dome. read more
Ukraine's President Volodymyr Zelensky has denied his country carried out an alleged drone attack on the Kremlin, which Russia says was an attempt on President Vladimir Putin's life.
"We don't attack Putin or Moscow. We fight on on our territory. We are defending our villages and cities," he said, speaking on a visit to Finland.
The Russian president's office said defences downed two drones overnight.
It threatened to retaliate when and where it considered necessary.
Unverified footage circulating online shows smoke rising over the Kremlin - a large government complex in central Moscow - early on Wednesday. A second video shows a small explosion above the site's Senate building, while two men appear to clamber up the dome. read more
Sudan generals unwilling to end fighting - UN
The UN's top aid official has warned that the "will to end the fight still was not there" after speaking to Sudan's rival military leaders.
Martin Griffiths told the BBC that Sudan's descent into violence was now at a dangerous tipping point.
He called for security guarantees from the warring sides to allow humanitarian aid into the country.
The UN warns that the fighting could force hundreds of thousands of Sudanese to flee their homes.
In a BBC interview hours after his visit to Port Sudan, Mr Griffiths spoke bluntly of what he called "the rigid existential fact that those at war are keen to keep it going". read more
The UN's top aid official has warned that the "will to end the fight still was not there" after speaking to Sudan's rival military leaders.
Martin Griffiths told the BBC that Sudan's descent into violence was now at a dangerous tipping point.
He called for security guarantees from the warring sides to allow humanitarian aid into the country.
The UN warns that the fighting could force hundreds of thousands of Sudanese to flee their homes.
In a BBC interview hours after his visit to Port Sudan, Mr Griffiths spoke bluntly of what he called "the rigid existential fact that those at war are keen to keep it going". read more
Ukraine war: US denies masterminding Moscow drone attack
The US has denied Russian claims it masterminded an alleged drone attack on the Kremlin on Wednesday aimed at assassinating President Vladimir Putin.
A day after accusing Ukraine of carrying out the alleged attack, Mr Putin's spokesman said it had been done with Washington's support.
US National Security spokesman John Kirby called it a "ludicrous claim".
Ukraine has said it had nothing to do with the alleged attack. Mr Putin was not in the building at the time.
Ukraine has accused Moscow of staging the incident in order to escalate the war. read more
The US has denied Russian claims it masterminded an alleged drone attack on the Kremlin on Wednesday aimed at assassinating President Vladimir Putin.
A day after accusing Ukraine of carrying out the alleged attack, Mr Putin's spokesman said it had been done with Washington's support.
US National Security spokesman John Kirby called it a "ludicrous claim".
Ukraine has said it had nothing to do with the alleged attack. Mr Putin was not in the building at the time.
Ukraine has accused Moscow of staging the incident in order to escalate the war. read more