U.S. and NATO officials said that the Russian military was shadowing U.S. ships participating in a multinational exercise in the Adriatic Sea, adding that “outside observance” wasn’t unusual and not necessarily related to rising tensions over Ukraine. The comments Wednesday came as the U.S. announced that it will send 3,000 …

The pre-dawn raid Thursday by U.S. special operations forces in northeastern Syria was designed to capture the leader of the Islamic State group, who instead blew himself up along with members of his family rather than be taken alive, top Pentagon officials said. Elite American troops spent months planning and …

A central theme of the 2017 U.S. National Security Strategy is the “growing political, economic, and military competitions” that the United States faces, including with Russia. Russia’s annexation of Crimea made it clear how far Moscow would go to advance its interests, including redrawing internationally recognized borders. This Perspective presents …