One of the largest earthquakes in the region, with a magnitude of 7.0, has hit Haiti Tuesday, killing possibly thousands, leveling buildings and destroying infrastructure. Reports say thousands of people are living out on the streets in the dust-covered capital.

The quake has been declared "catastrophic" by U.S. Secretary of State Hillary Rodham Clinton.

Thousands remain missing, including personnel at the United Nations headquarters.

Relief agencies from numerous countries have begun deploying aid, but the full scale of the disaster is still unknown.

Representatives from approximately 30 countries walked out of a session at the UN when Iranian President Mahmoud Ahmadinejad delivered a speech describing Israel as "racist". His speech included accusations that migrant American and European Jews helped Palestine create a "cruel and repressive racist regime".