What's the history behind the controversial policy and what have 2020 presidential contenders said?

Lupita Nyong'o says it was "exhausting" playing two different versions of the same character.

Aid agencies warn that it is becoming more dangerous, not less, in southern Africa after Cyclone Idai.

A chemical factory blast in eastern China killed 47 people and badly injured 90, state media says.

The firm's public stock offering is expected in the coming months and may be one of the biggest in 2019.

Theresa May is given more time to come up with a Brexit solution after talks with EU leaders.

The airline has asked to cancel an order for 49 jets after the plane was involved in two fatal crashes.

One week after the fatal shootings in two mosques, women in Christchurch demonstrate their support for Muslim women.

New technologies are helping track the provenance of food throughout the supply chain.

A new approach could preserve fertility for boys having cancer treatment - thanks to a baby monkey.

Bands from around the world are celebrating 50 years of heavy metal at the inaugural World Metal Congress in London.

North Korea withdraws from an office that enabled constant communication between the two Koreas.

Syria criticises the US president for saying it is time to recognise the occupied Golan as Israeli.

The star wants to use her catchphrase on merchandise, according to documents filed in the US.

Northern Ireland manager Michael O'Neill challenges his side to be "a little bit more polished" in the final third after their 2-0 win over Estonia.

Alex McLeish was "let down" by his players in the embarrassing 3-0 Euro 2020 qualification defeat in Kazakhstan, says former Scotland midfielder Charlie Adam.

Former world cruiserweight champion Tony Bellew opens up on retirement and clears up any doubts about the current heavyweight hierarchy.

Dr Jordan Peterson's views on gender have been the subject of much criticism.

Conservationists retract their findings, after evidence for the bird's discovery is disputed.

PSG see "no evidence of wrongdoing" by fans denied entry into Thursday's Champions League match at Chelsea when weapons were found on a supporters' coach.

Thirteen teams are still in real danger of going down from League One with eight games left. But how has it got so close?