KYIV—Ukraine said President Trump had offered it security guarantees for 15 years after the end of the war, a duration that Kyiv deems too short to deter Russia from future aggression and which it wants at least doubled.

Ukrainian President Volodymyr Zelenskyy indicated that American President Donald Trump said the U.S. will entertain the prospect of providing Ukraine with decades of security guarantees.

Ukrainian President Volodymyr Zelenskyy was scheduled to arrive at Mar-a-Lago in President Donald Trump's latest attempt to end the war with Russia.

Russian Foreign Minister Sergei Lavrov said on Monday that Ukraine had tried to attack President Vladimir Putin's residence in northern Russia and so Moscow's negotiating position would be reviewed, but Ukraine said it was a lie.