Only one thing makes war justified and lawful, only one thing. When it's a struggle for law against force, for people's laws, their language and way of life. Everything that makes them what they are against a brutal effort to impose on them a life and language and laws which are not theirs and they do not want.
If we are wrong to fight now, we were wrong to fight Hitler. We were wrong to fight the Kaiser. We were wrong to fight Napoleon. Wrong to fight Philip of Spain. Wrong to do anything but throw in the towel and crumple before the first brute force to come along.