Two police officers have been killed by a car bomb attack by Kurdish militants in south-eastern Turkey, officials say.

Spain's Princess Cristina testifies for the first time at her trial for alleged tax fraud, answering only the questions posed by her own lawyer.

Former Brazilian President Luiz Inacio Lula da Silva is detained as part of a huge fraud inquiry into the state oil company Petrobras.

A Zika vaccine could be ready for human trials in the summer, according to the man in charge of the US government's research programme.

Pakistani police say they have halted the marriage of a 10-year-old girl, who was due to wed a 14-year-old boy to end a family dispute.

North Korean leader Kim Jong-un says his country's nuclear weapons should be ready for use "at any time", state media report.

More of the biggest names in tech - including eBay, Google and Amazon have joined Twitter and Ebay in backing Apple in its court battle with the FBI.

Presidential contender Donald Trump has come under attack at a Republican debate, hours after being hammered by the party's leadership.