A ‘Yes Campaign’ supporter wears a necklace as Scotland’s First Minister Alex Salmond campaigns in Edinburgh, Scotland

A ‘Yes Campaign’ supporter wears a necklace as Scotland’s First Minister Alex Salmond campaigns in Edinburgh, Scotland

A ‘Yes Campaign’ supporter wears a necklace that reads ‘YES’, as Scotland’s First Minister Alex Salmond campaigns in Edinburgh, Scotland September 10, 2014. British Prime Minister David Cameron said on Wednesday that he would be heartbroken if Scots vote in next week’s referendum on independence to tear apart the family of the nations of the United Kingdom. The referendum on Scottish independence will take place on September 18, when Scotland will vote whether or not to end the 307-year-old union with the rest of the United Kingdom. REUTERS/Paul Hackett (BRITAIN – Tags: POLITICS ELECTIONS)