What Is Self Determination?

In order to have self determination, what you're going to have to accept is that some people are going to be doingte determinit at the expense of others. A now, if that's the case, why calling it self determination? I can understand its self determination in contrast with being ruled by some alien power or a colonial subject. But if you want to be self determining because you've got control, well, actually, you don't,. im and i don't want to overstate this, but what i'd like to do is persuade people that, now, this is not a powerful argument for 'self-determination'