Defense Secretary Ash Carter is laying out broad plans to defeat Islamic State militants and retake the group's key power centers in Iraq and Syria. And he announced that a special commando force has now arrived in Iraq.

Speaking to troops from the 101st Airborne Division who will soon deploy to Iraq, Carter also said he would meet in Paris next week with his defense counterparts, mainly from Europe, and will challenge them to do more to fight the Islamic State.

Carter's broader message signaled the completion of a military plan to help Iraqi and Kurdish Peshmerga forces retake Mosul in northern Iraq and to assist the Syrian moderate forces oust Islamic State militants from their headquarters in Raqqa.