'I wonder how long it can last': Cameron warns of the death of the Euro and blames 'populism' for his own demise as he gives first major address since leaving office

David Cameron has blamed 'populism' for his humiliating EU referendum defeat and warned the euro may not survive in his first major address since leaving Downing Street.

The former PM said he saw 'more trouble ahead' as people give voice to their dissatisfaction with the direction society has been going.

And although he said he did not think the EU would fall apart entirely, Mr Cameron made clear the single currency was in mortal danger.

The comments came as he spoke to students at DePauw University in Indiana as he begins a tour across the US.

It is not clear how much the ex-premier was paid for the address - but he received a fee of £120,000 for a private speech to Wall Street financiers last month.

Mr Cameron may need to rethink the content - as his decision to criticise the role of 'populism' in the referendum drew a major backlash.

David Cameron made his first speech since his resignation at DePauw University, Indiana, where he revealed he blamed 'populism' for the loss of his job

Spelling out his views on the euro, Mr Cameron said he 'wondered how long it can last', adding 'I see more trouble ahead'
Renowned historian Mary Beard was among those weighing in, posting on Twitter that Mr Cameron appeared to be blaming 'democracy'. Retired Colonel Richard Kemp said: 'How dare the people have a say?'

In his speech, Mr Cameron speculated about the future of the euro, saying he 'wondered how long it can last'.

He said: 'Some countries have seen decades of lost growth. Those countries have a single currency but they don't have a single fiscal system, a fiscal tax system. It creates bigger differences.

'You in the United States have ways to make sure that if you have a bad year you pay less in taxes and offset federal programmes. There are no such arrangements in Europe.'