Putin Alaska summit while European Commission and NATO leaders emphasize any deal must protect Ukraine's long-term security interests.

Some reports indicate that Russia is demanding that Ukraine give up the Donbas region and Crimea in return for ending the war. Russia has already annexed Crimea—a move not recognized by the international community—and its forces occupy most of the Donbas and further swathes of eastern Ukraine.

The calls come ahead of a scheduled meeting between Trump and Russian President Vladimir Putin on ending the war in Ukraine in Alaska on Friday. Trump has said the parties to the