Russian President Vladimir Putin has acknowledged U.S. proposals to end the war in Ukraine as a starting point for talks.

The U.S.-backed 28-point peace plan to end the war in Ukraine, which became public last week, drew from a Russian-authored paper submitted to the Trump administration in October, according to three sources familiar with the matter.

Russia is threatening to reject President Donald Trump's Ukraine peace plan unless "key understandings" from his Alaska summit with President Putin are upheld.

A new U.S. push to end Russia-Ukraine fighting has set off a flurry of diplomacy by American, European, Russian and Ukrainian officials.

Russian Foreign Minister Sergei Lavrov said on Tuesday that an amended peace plan for Ukraine must reflect the "spirit and letter" of understandings reached between President Vladimir Putin and U.S. President Donald Trump at their Alaska summit.

With Sudan's warring parties effectively splitting the country in half, insecurity and instability are poised to spread across the region.

The U.S. Army secretary, Daniel P. Driscoll, is in the United Arab Emirates for scheduled meetings with a Russian delegation about President Trump’s latest plan for peace in Ukraine, a U.S. official said.