U.S. officials now see ISIS as a credible threat , on a par with al Qaeda . Peter Bergen : `` With a large group of Muslim-Americans willing to die as 'martyrs ' and a strong operational partnership with al Qaeda leaders in Pakistan and in Yemen , al-Shabaab now has more capability than ever to strike the U.S . Some lawmakers have exaggerated the current threat to U.S. from ISIS . He says the problem is a potential issue , but few have been charged so far . The Associated Press contributed to this report. Clearly ISIS is a potent force that must be countered in Middle East .
U.S. officials now see ISIS as a credible threat , on a par with al Qaeda . Peter Bergen : Some lawmakers have exaggerated the current threat to U.S. from ISIS . He says the problem is a potential issue , but few have been charged so far . The Associated Press contributed to this report. Clearly ISIS is a potent force that must be countered in Middle East .