Boris Johnson has compared the EU’s aims to Hitler’s, saying both involved the intention to unify Europe under a single “authority”.
Mr Johnson said both the Nazi leader and Napoleon have failed at unification and the EU was “an attempt to do this by different methods“.
Labour MP Yvette Cooper, from the Remain campaign, accused the ex-London Mayor of playing “nasty, nasty games”.
Meanwhile, UKIP leader Nigel Farage has backed Mr Johnson to be the next Prime Minister said he was a “Boris fan” and said “he was backing Mr Johnson to succeed David Cameron, if the prime minister resigned following the EU referendum”.
According to him the referendum takes place on 23rd June, when voters in the UK would be asked whether they want the country to stay in or leave the European Union.
Mr Johnson said European history had seen repeated attempts to rediscover the “golden age of peace and prosperity under the Romans”.
“Napoleon, Hitler, various people tried this out, and it ends tragically. The EU is an attempt to do this by different methods,” he said.
He further said “But fundamentally what is lacking is the eternal problem, which was that there is no underlying loyalty to the idea of Europe”.
“There is no single authority that anybody respects or understands. That is causing this massive democratic void.”
Former Labour minister Ms Cooper accused Mr Johnson of having a “shameful lack of judgement” and a willingness to play “the most divisive, cynical politics”.
She added: “He should not try to play political games with the darkest and most serious chapter of Europe’s history. The EU had played a critical role keeping peace in Europe ever since.”