Social media giant Facebook said it more than doubled profits in the fourth quarter of 2015 to $1.56bn.

Samsung Electronics has been hit by falling sales for its smartphones as cheaper competitors erode market share.

Republican 2016 presidential candidates are due to take to the debate stage with Donald Trump notably absent, days before their first electoral test in Iowa.

The armed occupiers of a wildlife reserve in Oregon were given the chance to avoid the violence that left one of them dead, say police.

Sudan's President Omar al-Bashir orders the opening of his country's border with South Sudan for the first time since the latter seceded in 2011.

Sweden expects to expel up to 80,000 asylum-seekers whose applications have been rejected, the country's interior minister says.

Researchers in the US urge the World Health Organisation to take urgent action over the zika virus, linked to shrunken brains in unborn children

Ammon Bundy, the leader of an armed siege at a wildlife refuge in Oregon who was arrested on Tuesday, urges the remaining occupiers to go home.