How do you feel about young Americans deciding to join/support ISIS?

I agree with you. Too many Americans have bought into the propaganda that America is what's wrong with the world. And too many young people know next to nothing about world affairs.

"I, John J. Miller II, do solemnly swear that I will defend the Constitution of the United States against all enemies, foreign and DOMESTIC..."

I may be retired, but no one has ever relieved me from this oath.

You want go to hang out with ISIS and make friends with them? I will chip in $10 to help buy your plane ticket to link up with them. Just don't come crying back to all of us when they have you bound and tied and kneeling down in front of a camera...

Any American that joins Isis is a traitor and should receive the death penalty.

Reality: Treason -- this is an enemy of our Republic, and the democracies of the world.

If they are over 18 when they make their decision, let them live with that decision. Revoke their passport 48 hours after leaving the country. If they are kids, then we need to deal with that on a case by case basis. Some of them might have participated in actions against this country and be tried as adults. Some may have just been stupid and need a second chance.

I will also say that those Muslims in this country who do not like the consequences of criminal actions such as the Boston Bombings, can pack their bags and go back to their home countries. Zubeidat Tsarnaeva. their mother, said some awful things about the US and if she doesn't like what happened, then she can ago back to her home country where maybe she will be treated like a queen. She should have kept her mouth shut.

I don't know what American citizens are looking for when the join ISIS. I think they are really foolish. Their demise could be met by deciding to take part or to carry about some ill planned mission in which they have no or very little training.

I'd say let them go because their life wont be worth much over there. Chances are they will be enslaved, raped, abused and all sorts of other horrors no teenager in this world should ever have to face. But that is their reality and if thats what they want, let them have at it! And then as Sgt Daniel Vasquez said, there is a warrior training to kill them everyday!

I agree SSG Shaw. Let them live with their choices.

I hope this doesn't sound trite or cold-hearted, but if these Americans want to support ISIS then they should consider going over there in person to witness firsthand what these people are like. Beyond the propaganda, these terrorists represent the worst of humanity, and meeting them would be a real eye-opening experience for these people -- and also a dangerous one, considering ISIS' brutal reputation.