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

European leaders will join Volodymyr Zelenskiy to meet Donald Trump in Washington, they said on Sunday, seeking to shore up Zelenskiy's position as the U.S. president presses Ukraine to accept a quick peace deal to end Europe's deadliest war in 80 years.

European leaders will join Ukraine's Zelenskyy for a meeting in Washington days after Donald Trump's summit with Russia's Putin in Alaska.

Here are some key takeaways from the high-stakes meeting. President Trump on Monday said the United States will be involved in security assistance for Ukraine -- a key condition for Zelenskyy in any deal to end the war -- but did not elaborate on what exactly that would look like or give any specifics.

The US president says Russia's Putin is "expecting a call" immediately after his talks with Zelensky and European leaders.