With all of America's wars, there will always be sore losers who think the wrong side won. Seventy years after World War 2, there are still people who wear swastikas. One and a half centuries after the Civil War, there are still people who support Southern independence. Cecil Rhodes wanted to undo the American Revolution by having the US rejoin the British Empire. We can't win every heart and mind. We can't kill everybody who doesn't like us. Victory involves setting an objective and accomplishing that objective. Usually that objective involves getting someone important on the other side to sign a piece of paper,
I propose that there just isn't anybody important in ISIS, Al Qaeda, the Taliban, or any other group. There will always be someone who says that they are loyal to one of those group. Just because some lunatic shoots some people and says he's part of a bunch of other lunatics isn't sufficient cause to send troops and bombs halfway around the world. Attacking ISIS because of the San Bernadino shooters would be like burning Atlanta to the ground again because some racist punk murdered some people in a black church.