The terror group Boko Haram is diminished but far from vanquished in Nigeria, and it appears to be expanding its regional reach, writes CFR’s John Campbell. 

The fall of the Berlin Wall 20 years ago marked a triumph of the U.S. strategy of containment. But U.S. policymakers have been struggling to establish new guidelines for confronting the world’s compl…

The Arab world’s stirring for political change in 2011 failed dramatically, but support for building democratic institutions still represents one of the region’s best hopes for reform.

At its Warsaw summit, NATO should try to find better solutions to the problem of burden-sharing and a more sustainable strategy for managing tensions with Russia, writes CFR’s Stephen Sestanovich.