The European Union gave its blessing on Friday to Ukraine to become an official candidate to join the bloc, along with its neighbor Moldova, marking a historic eastward shift in Europe's outlook brought about by Russia's invasion.

Ukraine applied to join the EU just four days after Russian troops poured across its border in February. Four days later, so did Moldova and Georgia — two other ex-Soviet states contending with separatist regions occupied by Russian troops.

"Ukraine has clearly demonstrated the country's aspiration and the country's determination to live up to European values and standards," the EU's executive Commission head Ursula von der Leyen said in Brussels. She made the announcement wearing Ukrainian colors, a yellow blazer over a blue shirt.