So should the american state that funded them. Only terrorists fund other terrorists. Which justifies dropping a nuke on American citizens because they are related to terrorists by your logic.
Oh you seem to be so worried about the death of this terrorist's family. Now I get your point. This got nothing to do with the American citizens. They got nothing to do with the political decisions made by their authority. But if somebody or a group got the ideology to genocide the people whom are considered as non-believers, that scum should be eliminated. Just look at the innocent Iraqi, Syrian and Yasadi men, women and children (even toddlers and infants) brutally murdered by these ISIS fuckers.