Russian Foreign Minister Sergei Lavrov held calls on Saturday with his Turkish and Hungarian counterparts, the Russian foreign ministry said, hours after a summit between the U.S. and Russian presidents yielded no deal on ending the war in Ukraine.

The protections that the US and Europe would be able to provide to Ukraine are similar to NATO's collective defense mandate.

The president of Ukraine and his European allies are to visit the White House on Monday, after President Trump backed Russia’s plan to end the war.

Donald Trump and Vladimir Putin agreed at their summit in Alaska last week that the U.S. would be able to offer security guarantees to Ukraine, according to Steve Witkoff, Trump’s special envoy,