The roots of Russia's invasion of Ukraine go back decades and run deep. The current conflict is more than one country fighting to take over another; it is — in the words of one U.S. official — a shift ...

A bitter and bloody war in Ukraine has devastated the country, further isolated Russia from the West and fueled economic insecurity around the world. Ukraine’s military has denied a Kremlin claim to ...

Following the Soviet Union’s invasion of Afghanistan in 1979, mujahideen fighters waged a guerrilla campaign against Soviet forces and the puppet leader they installed. The war cost the Soviet Union ...