The senators' message to the officer tapped to lead the fight in Afghanistan on Thursday was clear: just tell us how many troops you need, and we'll make it happen. The Pentagon announced on Wednesday that Lt. Gen. John Nicholson would be nominated to take over as leader of U.S. and coalition troops in Afghanistan when Gen. John Campbell steps down. Less than a day later, Nicholson appeared before the Senate Armed Services Committee on Thursday. *********snip********* Sen. John McCain, R-Ariz., described problems the Afghan forces have faced over the past year, including a resurgence of the Taliban and the...