That's one of the more peculiar statements I've heard here, but very well, if you say it.
If you took an oath, you keep your word. If you don't have that, you don't have anything.
There's war in my homeland too, only not so...hopeless as you make yours sound. And that's saying something given that I'm fair concerned about machines and planes and bombs and the world's ending. It may be that ka means to lead you to defeat, sai, but you can't know that. If you have something worth fighting for, you have to fight for it. You have to try.