11.   But a senior State Department official said that Powell would refuse to commit American troops to guard the bridge.

12.   But as long as U.S. objectives remain unfulfilled in Afghanistan, there is no choice but to commit ground troops.

13.   But he acknowledged that the United States would likely be called on to commit troops.

14.   But he called for applying a more rigorous standard of whether U.S. military intervention was warranted before committing troops to the field.

15.   But he declines to commit American troops to peacekeeping duties, which Karzai had sought.

16.   But many other nations, not just the NATO allies, have ground troops currently committed to the Balkans.

17.   But Paterno said he thought President Bush had no choice but to commit troops in pursuit of terrorists.

18.   But so has the U.S. government, whenever it has decided to commit troops to dubious interventions.

19.   But Weld is less willing than Kerry to commit American troops for humanitarian missions.

20.   But, some lawmakers have begun to object to the idea of committing any troops under any circumstances to Kosovo.