ByBoris Johnson opened a new rift with David Cameron last night by warning that the Prime Minister's favoured answer to the eurozone crisis would lead to a German-dominated Europe.
The outspoken London Mayor attacked Mr Cameron's call for a 'big bazooka' bailout fund to resolve the economic turmoil.
He also criticised plans, backed by the Government, for the 17 countries in the eurozone to move closer towards fiscal union as undemocratic.
London Mayor Boris Johnson has criticised David Cameron's approach to the eurozone crisis
He said: 'What I don't think you can do is pretend that you can create an economic government of Europe, effectively run by Germany.'
Mr Johnson also condemned the recent replacement of elected leaders in Greece and Italy with governments led by technocrats as 'completely mad'.
Mr Cameron has called on German Chancellor Angela Merkel to use the European Central Bank to prop up struggling southern European economies - potentially by printing money.
Mr Cameron has called on German Chancellor Angela Merkel to use the European Central Bank to prop up struggling southern European economies
But in a newspaper interview, Mr Johnson said: 'This idea that if we can find a big enough bazooka, we could blow away the problem by creating a euro government in which there will be shared fiscal responsibility, I'm afraid that really will, in the long-term, simply exacerbate the problem.'
Instead, he proposed that the eurozone should split - one part including stronger economies such as Germany, and the other weaker, mainly southern states.
Alternatively, struggling economies should be allowed to leave the eurozone, devaluing their currencies, before deciding whether to try to rejoin.
Mr Johnson's remarks come just weeks after he goaded Mr Cameron by saying a referendum on Britain's membership of the EU would be a 'good idea'.