Up to 450 more troops will be deployed to Iraq

The U.S. forces will open a fifth training site in the country, this one dedicated specifically to helping the Iraqi Army integrate Sunni tribes into the fight, an element seen as crucial to driving the Islamic State out of the Sunni-majority areas of western Iraq.

The immediate objective is to win back the key city of Ramadi, which was seized by extremists last month.

The U.S. is insistent that Americans will not have a combat role. But in the deployment of American forces and the equipping of Iraqi troops, the U.S. must make sure “that we can be nimble because clearly this is a very nimble enemy,” Deputy National Security Adviser Benjamin Rhodes told reporters.