Russia launched on Sunday its largest drone attack on Ukraine since the start of the war, destroying homes and killing at least one woman a day before U.S. President Donald Trump is due to discuss a proposed ceasefire with Russia's Vladimir Putin, Reuters reported.

Ukraine's intelligence service said it also believed Moscow intended to fire an intercontinental ballistic missile later on Sunday as an attempt to intimidate the West. There was no immediate response from Moscow to the accusation.

President Volodymyr Zelenskiy, straining to restore ties with Washington after a disastrous February White House visit, met Vice President JD Vance and Secretary of State Marco Rubio in Rome on Sunday on the sidelines of Pope Leo's inauguration.

Zelenskiy said the meeting was "good" and released pictures of Ukrainian and U.S. officials sitting outside at a round table and smiling. Ukrainian media said the meeting lasted 40 minutes, according to Reuters.