FILE - In this July 7, 2013 file photo, British Prime Minister David Cameron, foreground, and Scottish First Minister Alex Salmond react after Andy Murray of Britain defeated Novak Djokovic of Serbia during the Men's singles final match at the All England Lawn Tennis Championships in Wimbledon, London. The British government pledged on Monday, Jan. 13, 2014 that it will assume all U.K. government debt in the event Scotland votes for independence — a move meant to reassure markets ahead of what is likely to be heated campaign. (AP Photo/Kirsty Wigglesworth, File)