Singer on Our Duties to Aid the Distant Needy

Present and evaluate Peter Singers argument for the claim that our duties to aid the distant needy are more demanding than we may have thought. Which moral principle(s) is/are doing the work in his argument? How does he justify this/these principle(s)? What conclusion does he reach? Finally, is Singers position more correct than Richard Millers more moderate view concerning duties of beneficence and rescue? Why or why not? Do you think that we are entitled to spend most of our money on ourselves, even though so many people around the world need our help?