"The even better course of action is to shift the weight of U.S. political and military efforts to Pakistan. There, the United States should continue its policy of waging drone attacks against al Qaeda and Taliban leaders. With better intelligence from the Pakistani side - as demonstrated recently - the U.S. Army can improve the accuracy of its strikes. And though drone strikes are controversial, targeting al Qaeda's leadership is the best military strategy - and the best way to protect Americans, Afghans, and Pakistanis from terrorism. And that fight is in Pakistan, not Afghanistan.
One problem (among many):
Nor do the authors deal with a widespread belief, backed by the U.S. administration, that the Afghan Taliban are based not in the tribal areas of Pakistan but in and around Quetta, the capital of its Baluchistan province. Sending U.S. drones into "mainland Pakistan" would be quite different from dropping missiles on the tribal areas - and even these cause resentment in Pakistan, which sees them as both a breach of its sovereignty and a 21st century sledgehammer in which civilians as well as militant leaders die.