The number of special forces troops on the ground in Afghanistan has more than doubled since last week, Defense Secretary Donald Rumsfeld said today, signaling a bolstering of U.S. efforts to provide support to anti-Taliban forces.

As U.S. strikes on Afghanistan enter their fourth week, Secretary of Defense Donald Rumsfeld and Joint Chiefs of Staff Chairman Richard Myers said the raids have taken a toll on the Taliban and the al-Qaida terrorist network.