President Trump said the Russian leader Vladimir Putin had warned that he would retaliate for a covert Ukrainian attack in Russia last weekend that destroyed dozens of Russian bombers.
Ukraine and European allies had demanded Russia accept a 30-day ceasefire starting Monday before holding talks, but Moscow effectively rejected the proposal and called for direct negotiations instead.
Ukraine's president said he hopes the U.S. applies "maximum additional sanctions" on Russia if it refuses to accept a 30-day ceasefire, describing the Russian leader's "bravado" as a stalling tactic.
Leaders from across Europe came quickly to the defense of Ukrainian President Volodymyr Zelenskyy, after his televised clash with President Trump and Vice President Vance.
Ukraine has long sought the U.S.-made warplanes, saying they're needed to counter Russia's superior air power. Four NATO members have pledged F-16s, though it wasn't clear who sent them, or how many.
Zelenskyy is headlining a frenzied first full day of the World Economic Forum's annual meeting in the Swiss resort, where officials from the U.S., EU, China and Middle East will also be prominent.
The aid package for Ukraine was vetoed by Hungarian Prime Minister Viktor Orban. The EU did approve opening membership negotiations with Ukraine and its neighbor Moldova.
Rescuers searched for survivors in the remains of the only cafe in the village of Hroza. Around 60 people, including children, were attending a wake at the cafe when the missile hit, officials said.
Ukrainian President Volodymyr Zelenskyy will speak to the Canadian Parliament on Friday as part of his campaign to bolster support from Western allies for Ukraine's war against the Russian invasion.
The Ukrainian leader is in D.C. Thursday to meet with Congress, the Pentagon and the White House. Some $24 billion in new aid to Ukraine is in limbo ahead of a possible government shutdown.
Ukraine's President Volodymyr Zelenskyy is expected to meet with the group of seven leading industrial nations' meeting in Japan this weekend, as member states intensify sanctions on Russia.
German President Frank-Walter Steinmeier on Sunday welcomed Ukrainian President Volodymyr Zelenskyy to Berlin on his first visit to the country since Russia invaded Ukraine.
A string of resignations, dismissals and reassignments shook Ukraine's government, as Ukrainian President Volodymyr Zelenskyy and other leaders of the government confirmed the shake-up.
