毕竟，巴基斯坦才是恐怖分子避难所和阿富汗叛军指挥控制中心，这令2001年以来美国搜寻阿富汗塔利班的军事行动大受掣肘。
After all, the terrorist havens and command-and-control centers for the Afghan insurgency are located in Pakistan – undercutting the US military effort to rout the Afghan Taliban since 2001.