Gen. Stanley McChrystal, the top U.S. commander in Afghanistan, is calling for a counterinsurgency strategy based on more U.S. troops and more training of afghan troops. Max Boot, of the Council on Foreign Relations, backs this strategy. But Vice President Joe Biden instead wants the focus to be counterterrorism. Sen. John Kerry (D-MA) is seeking a limited troop increase, and a credible Afghan partner. But retired Marine Col. Thomas Hammes wants U.S. troops withdrawn.