WASHINGTON  - Nearly a year after a us raid killed Osama bin Laden, his core qaeda network in Pakistan is “essentially gone” but its affiliates remain a threat, US intelligence officials said Friday. Bin Laden’s death further weakened qaeda and it was unlikely the group could stage another strike on the scale of the attacks of September 11, 2001, a counterterrorism official told reporters. “It’s really hard to imagine qaeda core gathering together the resources, the training, the talent, the money to repeat a 9/11 type of attack,” said the official, who spoke on condition of anonymity. While it was “too soon to declare victory,” the official said “some could argue that the organization that brought us 9/11 is essentially gone.”  But “the movement certainly survives, the ideology of the global jihad survives, bin Laden’s philosophy, that survives in a variety of places outside of Pakistan,” the official added. The comments were echoed later Friday by us Defense Secretary Leon Panetta, who spoke to reporters aboard a military plane on his way from Latin America, where he visited Colombia, Brazil and Chile. “Having been involved in the operations, even before we did bin Laden, it’s clear that there is no kind of silver bullet here to suddenly being able to destroy qaeda , and that includes even going after bin Laden,” Panetta said. “But the way this works is that the more successful we are at taking down those who represent their spiritual and ideological leadership, the greater our ability to weaken their threat to this country and to other countries,” he added.