The WHO has to set up an effective disaster management unit that can reach any such site within 12 hrs of any calamity - be it Tsunami or Earthquake. The team should have a network of doctors and paramedical forces around the world who can volunteer to help in such situations. They need not be on roll of WHO. The WHO should provide the infrastructure to set up a base hospital unit that can accomodate casualties and provide treatment asap. Maybe if WHO cannot do it the red cross should take it up. Every year there are atleast two to three such majot disasters in the world.