If, God forbid, this country allowed them re-entry they should return under this countries terms which are not negotiable. Their true loyalty, obviously ,is directed to other countries NOT this one. Can you really see Jihadist John spreading the gospel on the error of his ways and spreading the good word on the street corners here. There are more,probably, preachers of hate festering in the hundreds of mosques in this country than preachers of their so called faith. Internment and interrogation, Guantanemo style, in order to gain much needed intelligence about the pernicious mind set of the jihadist. Cut them off from friend ,family and the benefits they sacrificed by leaving this country and then threaten us with terror when they return. If not acceptable conditions to them let them rot in the new country of their choice and if they miss their families they can be invited to join them.