I guess that depends on how you define "right". Might lets you impose your will on others. Being successful in doing so does not speak to whether or not your will is right.
Indeed. Being successful doesn't mean you were right to do what you did. However, having the ability to impose your will and choosing not to is a moral choice, just as much as choosing to impose it is. If we have the power to stop terrible things from happening in other parts of the world, at some point, it is our duty to. This is complicated and wrapped up in issues of sovereignty, of course.
