U.S. Defense Secretary Donald Rumsfeld has made a surprise visit to the U.S. base near the Iraqi city of Mosul targeted in Tuesday's deadly insurgent attack.
Secretary Rumsfeld told soldiers of the 25th infantry division Friday they can defeat the insurgency in Iraq.
Mr. Rumsfeld later visited U.S. soldiers in the city of Tikrit, south of Mosul.
The visit comes as authorities investigate how a suspected suicide bomber penetrated the base and killed 22 people. The commander of U.S. military forces in Mosul (Brigadier General Carter Ham) says investigators believe the suspected bomber was wearing an Iraqi military uniform.
Elsewhere, U.S. forces pounded insurgents in Fallujah on Thursday as 200 families waited to re-enter the city for the first time since November's offensive to crush fighters holed up there.
Information for this story is provided by AP and Reuters.