Canada will formally withdraw from the Kyoto Protocol on climate change, the first nation to pull out of the treaty, the environment minister has said.

The US Supreme Court is to consider Arizona's tough immigration law - its latest politically charged case with an election year looming.

More than 5,000 people are now believed to have been killed in the uprising in Syria, the UN's top human rights official says.

The son-in-law of Spain's King Juan Carlos agrees to stand down from public duties amid a corruption scandal.

Canada's government introduces a ban with immediate effect on the wearing of veils while swearing the oath of citizenship.

Doctors treating Brazil's former President, Luiz Inacio Lula da Silva, for throat cancer say his progress is "impressive".

Papua New Guinea faces political deadlock after the supreme court rules Peter O'Neill was illegally appointed prime minister in place of Sir Michael Somare.

Hundreds of anti-Wall Street protesters cause major disruption to three ports on the US West Coast, shutting terminals and blocking cargo lorries.