Although the transatlantic security community actively debates the merits of the 2 percent measure, it has not identified an alternative measure or set of measures to adopt instead. This report seeks to catalyze that political and analytical discussion of alternatives by...

Russia is expanding its use of undersea warfare in a broader strategy of coercion aimed at its neighbors, NATO, and the United States.

Whoever takes office in January 2017 is likely to inherit a nuclear landscape of greater risk, complexity, and challenge than any time since the collapse of the former Soviet Union.

There is nothing like nuclear weapons to add drama to conventional crises. On the anniversary of Russia’s annexation of Crimea, President Putin’s claim that he considered placing Russia’s nuclear weapons on alert to deter retaliatory action caused more than a few...