U.S. officials now see ISIS as a credible threat , on a par with ISIS . Bergen : Some lawmakers have exaggerated the current threat to U.S. from al Qaeda . He says the problem is a potential issue , but few have been charged so far . homeland . '' Peter Bergen : 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 ISIS . Bergen : Some lawmakers have exaggerated the current threat to U.S. from al Qaeda . He says the problem is a potential issue , but few have been charged so far . Peter Bergen : Clearly ISIS is a potent force that must be countered in Middle East .