Rajan Menon

The current conflict in Ukraine has spawned the most serious crisis between Russia and the West since the end of the Cold War. It has undermined European security, raised questions about NATO's future, and put an end to one of the most ambitious projects of U.S. foreign policy -- building a partnership with Russia. It also threatens to undermine U.S. diplomatic efforts on issues ranging from terrorism to nuclear proliferation. And in the absence of...