This story has been updated with a response from the White House. A senior U.S. envoy involved in efforts to end Russia's full-scale war against Ukraine has displayed a lack of basic understanding of Ukraine's political system and the war itself while speaking in a closed conversation with a small group of reporters,

Despite claims of success in Ukraine, new CSIS data shows that Russia is paying an extraordinary price for minimal gains, with over 1.2 million casualties. Russia is also in decline as a major economic power with slow growth,

As losses mount, the pace of Russia's advance has at times been slower than the Battle of the Somme during World War I, a report says.

U.S. President Donald Trump says President Vladimir Putin has agreed to temporarily halt the targeting of the Ukrainian capital and other towns as the region suffers under bitterly cold temperatures.

In Russian statements surrounding the latest round of peace talks in Abu Dhabi, a new catchphrase is emerging: “the Anchorage Formula.”