https://eblog.eb.mil.br/w/a-importancia-geopolitica-da-ucrania-para-moscou?p_l_back_url=/web/guest?delta=40&tag=defesa&tag=geopol%C3%ADtica&tag=guerra+moderna&tag=rela%C3%A7%C3%B5es+internacionais&tag=seguran%C3%A7a