Geldof: We must do something about Darfur

Bob Geldof is desperately urging the world's superpowers to put their weight behind the crisis in Darfur in a bid to halt the violence.

The rocker-turned-activist slammed China for continuing to provide arms to Sudan's "thuggish" Khartoum government, which is, in turn, refusing to allow United Nations peacekeepers to enter the troubled country.