On the two-decade anniversary of the U.S. invasion, Iraq is weakly governed, leaving it prone to instability and meddling by neighbors—especially Iran.

Alone among US President George W. Bush’s senior advisers, Colin Powell did not push for the costly, ill-advised Iraq War, and it would be misreading history to hold him responsible for it. He remain…

On March 20, 2003, I found myself bobbing offshore along Iraq’s tiny coastline in a raging sandstorm, as a reporter covering the U.S. Navy SEALs and Polish special forces’ operations in the U.S.-led …