This is so true and I think that many of our citizens don't realize the importance of this. If we can do something to help another, then we have a moral obligation to do so. I have come across the mindset that we should only be concerned with the well-being of our own people. I strongly disagree. We do have power and we should not use it selfishly. No human being is more deserving than any other. An American isn't more important than someone from a different country. Everyone matters, regardless of country or status.
If someone's neighbor was being beaten, I would hope that they would intervene. It's wrong to stand by while someone needs help. Why should that be different on an international scale?
Ideally, whoever is in power should be an example of good humanity.