There are two meanings to the term, mrrzy. One is a general moral characterization. the other is more of a legal definition which only applies when a legal declaration has occurred. But there is no question that the actions of Tuesday were acts of war, in the first sense. Pearl Harbor was not an act which occurred during a declared war, either, but it sure brought about a legal state of war in a hurry; WTC, etc., may not do that, though, because there is no one nation behind it, but a diffuse network of psychos operating across multiple nations, I think.
Regards,
A.