I got news for you the united states have been executing muslims since 9/11 with drones,now its up to you to choose which is more babaric,useing a missile to blow you to pieces or a beheading,which is very common,the syrians having been doing it so has the saudies,and its was done in lebanon.
Remember Obama had said the united states is at war with isil,which was like the death sentice on the american held hostages.
With our borders wide open for Mexican cartels and crooked officials to rake in the bucks off terrorists needing guidance and the ability of isis to recruit Americans inside the US it may be too late to kill them before they kill us. But rest assured, obama has another speech to tell us how safe we are, how much better off the world is now that he has healed the waters and saved America and the world. So before anything happens obama has a lot of nice smoke to blow up your ass and make you feel warm and fuzzy.