All of these people chiming in now saying that killing these guys is unwise are essentially admitting that they were (apparently) perfectly fine with allowing Iran to, in all matter of speaking, station proxy troops in another country so that they could plan and carry out attacks against the U.S. coalition and U.S. personal. . .
they are either categorically insane or utterly inept, if not both.
But they should have tried to capture these guys first, before trying to kill him...