How would a Brexit affect the global power balance ? (video)

British voters will decide whether to leave the EU in a June referendum.


Barack Obama says the European Union doesn't moderate British influence but it "magnifies it".

The US President strongly feels the United Kingdom is better off staying within the European Union, and made this clear as he visited London to attend Queen Elizabeth's 90th birthday celebration.

His message on the EU vote is annoying some in an increasingly fractious debate in the UK, and it seems to reflect bigger fears that Europe is vulnerable.

Home-grown attacks, the refugee crisis and the rise of the far-right all threaten to undo unity on the continent.

Obama is hoping he can convince Europeans they're better off together.