Everyone seems to be missing the point. They list terrible atrocities that don't get even close to the same outcry from the world as the attacks in Paris.
tl;dr - You're confused about the definition of terrorism.
Sure not, it is not terrorism if you get the right do define it!
Neither you nor I get the "right" to redefine words as we see fit after they have been defined. Invent another word. "State terrorism" could be a rather contentious term for "war" and calls into question your motives.