The nations of the world, private individuals and organizations have pledged over $3 billion to rush relief to southern Asia's earthquake and tsunami victims. Now the challenge is turning those pledges into cash and that cash into humanitarian aid. What do officials need to do to help the estimated 500,000 plus people injured, 1 million homeless and 2 million left in need of food by the disaster? (Photo by Richard Freeland/DOD via Getty Images)