BERLIN—A dozen senior German officers convened at a triangle-shaped military compound in Berlin about 2½ years ago to work on a secret plan for a war with Russia. Now they’re racing to implement it.

KLAIPEDA, Lithuania—Germany’s top military officer, Gen. Carsten Breuer, stood astride a map of Lithuania laid out on the floor of a makeshift command post in this port city on the Baltic Sea. A chill ...

Sign up for our newsletter about national security here. The Bendlerblock is an imposing neoclassical building near the center of Berlin—severe and symmetrical ...

Bill Whitaker is an award-winning journalist and 60 Minutes correspondent who has covered major news stories, domestically and across the globe, for more than four decades with CBS News. This past ...