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

The meeting last week was just the latest example of a long-running rift inside the Trump administration over how to end the war in Ukraine.

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.