Biden on Ukraine joining NATO: 'It remains to be seen'

President Joe Biden made clear Monday that Ukraine does not yet have the go-ahead to join the North Atlantic Treaty Organization, a move long sought by Ukraine and vehemently opposed by Russia.

For a moment, it appeared Ukraine may be closer to joining the trans-Atlantic mutual protection treaty when President Volodymyr Zelenskyy appeared to announce a change on Twitter shortly before Biden began a news conference in Brussels, where he was attending a NATO summit.

"Commend @NATO partners' understanding of all the risks and challenges we face. NATO leaders confirmed that (Ukraine) will become a member of the Alliance," Zelenskyy tweeted. His tweet did not say when the country would join.

Biden, who has previously called for Ukraine to join NATO, made clear that such a move had not been approved yet.

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