Other U.S. troops will pivot to fighting ISIS in Iraq rather than immediately heading home. Some 300,000 people have reportedly been displaced since Turkey's offensive began.
More than 2,000 refugees have crossed into Iraq since Turkey began its assault on northeastern Syria last week. Aid groups are bracing for as many as 50,000 refugee arrivals.
After the 2001 al-Qaida attacks, the CIA ramped up counterterrorism operations. This included a surge in young, female recruits. Three have written new books about their secretive work.
The violence first erupted on Tuesday and has spread across Baghdad and much of the country's mainly Shiite south. Protesters are venting anger over a lack of jobs and poor infrastructure.
"It's crazy to know that he died alone in a country he'd never been in," Jimmy Aldaoud's sister told NPR. He had arrived in the U.S. with his Iraqi family when he was a very young child.
Iran says it seized an Iraqi oil tanker and its crew in the Persian Gulf, for allegedly smuggling fuel. It's the third such incident in two weeks, and comes amid rising U.S.-Iranian tensions.
Retired Army Staff Sgt. David Bellavia received the nation's highest medal for heroism for saving his squad in Fallujah, Iraq. Bellavia is the first living veteran of that war to be so honored.