The Kremlin said it reserves the right to use nuclear weapons if it faces aggression by Western countries. Overnight, Moscow attacked Kyiv, killing at least nine people.

President Trump lashed out at Ukrainian President Volodymyr Zelenskyy again on social media, after the Ukrainian leader refused to accept Russia's 2014 annexation of Crimea.

It comes with Trump’s big peace plan hanging in the balance — and with Vladimir Putin still launching deadly drone attacks on Ukrainian civilians. What’s on the table: Trump is said to be offering Putin permanent control of the 20 percent of Ukraine he’s seized through his illegal invasion,