Quote Originally Posted by slapout9 View Post
So subversion,espionage,sabotage,blackmail are OK and are not Acts of War?
Not OK and depends on the context. By act of war, do you mean "warfare?" None of those things are warfare in and of themselves.
None of the things you cite, are in of themselves military task to counter.
They may well be criminal. Do they involve killing? All those things are far more likely to fall towards police/state security, than the army.

An Army can only be used against armed force.