In the art of war Sun Wu mentions by declaring war you already know you are the victor and will decisively take it because prolong endeavours bring down empires. He also mentions terrorism is not war. So if it is not war how can one declare war on it? How can you ever know who you are fighting? You could be fighting any and every one in opposition. Not a good sign for peace or stability. War is never the answer. Seriously, why can't we all just get along?