Ukraine’s top negotiator is scheduled on Thursday to meet in Florida with U.S. special envoy Steve Witkoff, two days after the American's high-stakes meeting with Russian President Vladimir Putin in Moscow, according to a senior administration official.

The latest U.S. push to end Russia’s nearly 4-year-old war in Ukraine has unleashed a frenzy of diplomatic activity.

European leaders have reportedly expressed fears about the Trump administration using peace negotiations to “betray” Ukraine as the country seeks to end its nearly four-year war with Russia.

The presidents of Ukraine and Russia are expected to be briefed this week on outcomes of Sunday's U.S.-Ukraine talks.

US President Donald Trump expressed optimism after a high-level meeting between US officials and a Ukrainian delegation in Miami on Sunday, suggesting there was a “good chance” of a deal to end Russia’s war in Ukraine.

The commander-in-chief of Ukraine's armed forces accused Russia of stalling peace talks to capture more land by force on the frontlines.