Brexit to pints with Xi: why David Cameron is a controversial foreign secretary

David Cameron has made a shock return to the UK government as foreign secretary. A profile on the government's website credits him with developing "a foreign policy that responded to the new challenges of the Arab spring and also evolving challenges from various state and non-state actors". But his legacy - most obviously his triggering of the biggest shift in Britain's foreign relations since the second world war with Brexit - is riddled with controversy. Libya Cameron was one of the main architects of Nato's use of force in Libya in 2011 and the years afterwards have been marked by…