California firefighters struggle to contain a blaze that rages on near Yosemite National Park.

Thousands of Tunisians rally in the capital Tunis as opposition leaders call for a week of protests against the Islamist-led government.

Thirty-one people, including a toddler, are confirmed to have died in a prison riot in Bolivia's largest prison outside the city of Santa Cruz.

Hundreds of far-right activists stage anti-Roma marches across the Czech Republic, with dozens arrested following clashes with police.

Colombian Farc rebels have killed at least 13 soldiers in an ambush, the army says, although the two sides are due to resume peace talks soon.

David Cameron and Barack Obama have threatened a "serious response" if it emerges that Syria has used chemical weapons, Downing Street says.

Former top Chinese politician Bo Xilai accuses his ex-police chief of telling lies, on the fourth day of his corruption trial in Jinan.

Egypt's interim government shortens a night-time curfew imposed during its crackdown on Islamist supporters of ousted President Mohammed Morsi.