President Donald Trump, who CNN reported Friday has been surprised and frustrated at the difficulty of achieving his promise of ending the war, wants Ukraine to give up territory in exchange for peace and essentially cede control of Crimea, the peninsula Russia first invaded in 2014.

President Trump said Saturday that he doubts Russia’s Vladimir Putin wants to end his war in Ukraine. Only a day earlier, Trump said Ukraine and Russia were " very close to a deal."

KYIV, Ukraine (AP) — President Donald Trump said in an interview published on Friday that “Crimea will stay with Russia,” the latest example of the U.S. leader pressuring Ukraine to make concessions to end the war while it remains under siege.