The officials said the dreaded Islamic State terror outfit was not the only concern for the US.
"ISIS is not the only terrorist group of concern. Al- Qaeda maintains its desire for large-scale spectacular attacks. However, continued CT pressure has degraded the group, and in the near term al-Qaeda is more likely to focus on supporting small-scale, readily achievable attacks against the US and allied interests in the Afghanistan-Pakistan region," Christopher A Wray, FBI Director told members of the Senate Committee on Homeland Security and Government Affairs.
Director of National Counterterrorism Center Nicholas J Rasmussen said the US had constrained al-Qaeda's effectiveness and its ability to recruit, train and deploy operatives from its safe haven in South Asia.
"However, this does not mean that the threat from core al-Qaeda in the tribal areas of Pakistan or in eastern Afghanistan has been eliminated," he told lawmakers.
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He said the terror outfits were also cognizant of the level of risk the US may face over time if al-Qaeda regenerates and finds renewed safe haven or restores lost capability.
"We are on alert for signs that al-Qaeda's capability to attack the West from South Asia is being restored and would warn immediately if we find trends in that direction," he said.
Rasmussen asserted that the US government will maintain sufficient capability to continue to put pressure on al- Qaeda's core network and reduce the risk of its resurgence in the region.
"While conflict among terrorist groups may well distract them from their core mission of plotting attacks against Western targets, conflict also serves to introduce a degree of uncertainty into the terrorism landscape that raises questions that I don't think we have answers to yet. This is something we are watching very closely," the official said.
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