“U.S. strikes against the self-proclaimed Islamic State have had an unintended beneficiary: al Qaeda. Al Qaeda has exploited the strikes and gained strength, and that has created a growing rift within U.S. national security circles about where the coalition should aim its strikes. Some American intelligence and defense officials and counterterrorism experts are worried that the intense focus on defeating ISIS has blinded the U.S. to the resurgence of al Qaeda, whose growing potency has become more apparent as ISIS becomes weaker.”
Source: America’s ISIS War Is Helping Al Qaeda – The Daily Beast