The situation in Ukraine will continue to unravel unless Russia comes to planned diplomatic talks in Geneva this week with options for defusing the crisis, says expert Steven Pifer.

As twin explosions in Volgograd raise concerns of terrorist attacks disrupting Russia’s Winter Olympics in February, expert Dmitri Trenin explains the root causes of insurgency in the North Caucasus.

The unexpected convergence of the United States and Russia over Syria’s chemical weapons is likely to be strained by delays in the disarmament process, says expert Nicolas Gvosdev.

President Obama’s cancelled state visit to Moscow next month is another indication that the so-called U.S.-Russia reset has derailed, says CFR’s Stephen Sestanovich.

New plans for another global summit on the Syrian crisis represent modest progress, but the real question is whether the Kremlin is willing to withdraw support for the Assad regime, says CFR’s Stephe…