U.S. troops could be used to help evacuate American citizens from Ukraine should Russia invade the country, chief Pentagon spokesman John Kirby said Wednesday. Kirby’s comments came as roughly 850 troops with the 82nd Airborne Division from Fort Bragg, N.C., arrived in Poland in response to more than 100,000 Russian …

Strykers and combat support vehicles lined up at the Army airfield Wednesday as about 1,000 American troops prepared to head to Romania for an open-ended deployment meant to reassure allies worried about Russia’s military buildup around Ukraine. The Vilseck-based 2nd Cavalry Regiment soldiers will remain in Romania to shore up …

The next leader of Islamic State is likely to be from a close circle of battle-hardened Iraqi jihadists who emerged in the aftermath of the 2003 U.S. invasion, two Iraqi security officials and three independent analysts said. The group of potential successors to Abu Ibrahim al-Quraishi, who blew himself up …