Very interesting program on the American shift towards protectionism:
http://www.bbc.co.uk/programmes/b07cv0y7#playAlthough not directly related to Brexit, the implications are clear - There is a fierce debate going on in America which could well end in America opting for a protectionist policy and the inevitable trade wars that would follow.
Anyone who believes that following a British exit from the EU the world would be a good place to establish new trade agreements, had better consider the very real possibility of a world with trade barriers well and truly up for all major trading blocks - not a good environment for a lone Little England.