I don't stab techniques, true. But I can stab anyone who uses them, and make it a point to do so. And that's the point. If, as here, there was a country, or group of countries, in which international terrorism was a standard means of operation, and if, as we saw on September 11th, that can hurt us, then we can make war on them unless they give it up.
And we are. That's called war, this country attacking another. And the marker that determines our enemies? Terror.
Sounds like a good shorthand to me.