U.S. President Donald Trump told President Volodymyr Zelenskiy on Monday that the United States would help guarantee Ukraine's security in any deal to end Russia's war there, though the extent of any assistance was not immediately clear.

President Trump has offered only vague assurances of security guarantees for Ukraine if President Volodymyr Zelensky agrees to cut a deal with Russia.

President Donald Trump said on social media Saturday that a deal better than “a mere Ceasefire” is in the works with Vladimir Putin, hours after Trump’s high-stakes summit with the Russian leader in Alaska failed to produce an agreement to halt Russia’s invasion of Ukraine.

President Volodymyr Zelenskiy accused Russia of unleashing "cynical" attacks on Ukrainian civilians that he said were designed to undermine his talks with U.S. President Donald Trump in Washington later on Monday.

Steve Witkoff says Vladimir Putin agreed at his summit with Donald Trump to allow the U.S. and European allies to offer Ukraine a security guarantee resembling NATO’s collective defense mandate.

Ukrainian President Volodymyr Zelensky and EU Commission President Ursula von der Leyen on Aug. 17 re-emphasized Ukraine's demands for a peace deal with Russia and presented a united front ahead of their meeting with President Donald Trump and other European leaders.