Is he not still a French born citizen deserving of a fair trial? Or should getting a dual citizenship of a foreign passport, of a nation that later becomes an adversary, become an automatic death sentence? US should then put all it citizens with Cuban and Iranian passports in jail with that logic.

And then what about Jacques BAUD who's Swiss living in Belgium? He doesn't deserve a fair trial either? On what grounds? With what evidence?

How can you justify dishing out death sentences without trial? Remember that blindly supporting the authoritarian hand waving of due process with no trial or evidence, just to easily get rid of undesirable people, can always be used against you too, if what you say becomes undesirable when politics shifts.