PM's EU stance leaves 'unprecedented uncertainty'

David Cameron's speech in Davos will open "a period of unprecedented uncertainty about Britain's future relationship with the European Union," according to a leading foreign affairs think tank.

The director of Chatham House, Robin Niblett, has warned the "negative impacts to UK national interests may outweigh the putative domestic political gains that [Mr Cameron's] approach is meant to deliver".

He added that hearing Cameron discuss the risks of a UK withdrawal, it "makes one wonder how a Prime Minister who prides himself on pursuing the British national interest has ended up potentially gambling those benefits away in an unpredictable EU negotiation and UK referendum process."