Pavel Felgenhauer, an independent defense analyst in Moscow, is pessimistic about a Russia-U.S. rapprochement in part because of enduring concerns about U.S. missile defense system plans.

The conflict in Ukraine’s east could remain unresolved indefinitely unless all sides pursue a different course toward a compromise, says expert Nikolas Gvosdev.

Linton F. Brooks, a member of the CFR Task Force on U.S. nuclear weapons policy, says Iran is "probably the most difficult challenge for the nonproliferation regime" and the United States must priori…

Fiona Hill, a leading expert on Russia and the Caucasus, says this weekend’s parliamentary elections in Chechnya could have been a significant step forward if Chechens had been encouraged to broaden …