“If the approach is going to be to tear up the withdrawal agreement then I think we are in trouble – we are all in trouble,” Mr Coveney said.
He warned Mr Johnson, the near-certain next Tory leader, not to threaten the EU with a no-deal Brexit, which he branded a “give me what I want or I’m going to burn the house down for everybody” stance.
But, speaking on the BBC’s Andrew Marr programme, Mr Coveney said it would be the UK “forcing a no-deal Brexit on everybody else”, if it happened.
“We want to resolve these issues, but we won't do it by being told what must happen to get it through the House of Commons. A new prime minister does not change this,” he vowed.