Whenever there is a tragedy, like today, there are people who argumentation rest on ''if only Hussein/Khadaffi was still there, he would have kept order and we would not be in that mess''.
Of course, saying a generality like ''if Irak was not in a mess, it would be better for everyone (especially Iraqis, should I say)'' are quite accurate (and remarkably evident), but IMO the question is rather if Hussein/Khadaffi/Assad were actually keeping ''order''
In fact, as seen in Yugoslavia and countless order places, I would dare to say that ruthless repression only work to a certain degree against very sizable minorities. Yugoslavia did managed to make the whole concept vaguely acceptable to non-Serbs, but they also made concessions to the said non-Serbs (concession removed by Milosevic, cue to several unpleasanteries)
Considering what he done to Kurds, Shias (and a lot of Sunnis too, especially form his own family), it's very doubtful that Saddam would have died in his bed : the way he ''kept order'' (just repression, and running the country like a business owned by the Tikritis) was not keeping order...it was sowing the seeds of violent uprising.
TLDR : shooting terrorists is of course an absolute priority-but it's not by backing cloud cuckoolanders that such a goal is best achieved.