KYIV, Ukraine (AP) — U.S. President Donald Trump’s special envoy Keith Kellogg said in Kyiv on Monday that officials are “working very, very hard” on efforts to end the three-year war between Russia and Ukraine, as a lack of progress fuels doubts about whether a peace settlement could be on the horizon.

Moscow continues to throw cold water on the prospect of Putin-Zelenskyy meeting, and is insisting Russia have a role in security guarantees for Ukraine.

President Trump has "a lot of cards left to play to apply pressure" to end the Russia-Ukraine war, Vice President JD Vance said in an interview broadcast Sunday. The big picture: Vance said on NBC News' "Meet the Press" that he didn't think Moscow was stringing Trump along after Russia's Foreign Minister Sergei Lavrov said in a separate interview on the same show that no leaders' meeting had been planned between Russia's Vladimir Putin