Just a few months into Olga Stefanishyna's job as Ukraine's ambassador to the U.S, she is helping negotiate a peace deal that could end Russia's war on Ukraine.

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

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.