US intelligence is not aware of the exact locations of all Pakistani nuclear weapons,but is keeping a close track of the arsenal to ensure they were secure from militant groups like Taliban,CIA director Leon Panetta has said. "We don't have frankly the intelligence to know where they are all located but we do track the Pakistanis," Panetta said amid concerns that the weapons could possibly fall into the hands of Taliban insurgents. Speaking at a function in Los Angeles,the CIA chief said Pakistan's nuclear arsenal was "pretty secure". "Right now we are confident that the Pakistanis do have a pretty secure approach to trying to protect these weapons. But it is something that we continue to watch because obviously the last thing we want is for the Taliban to have access to nuclear weapons in Pakistan." US concerns come as Taliban fighters have almost come close to the country's capital Islamabad forcing Pakistan Army to order a crackdown against them under pressure from Washington.
