Greek Prime Minister Alexis Tsipras has says he does not believe in a bailout offered by eurozone leaders – but is willing to implement it.
Mr Tsipras described the deal as “harsh”, but said it was the only way for Greece to remain in the euro.
The conditional plan depends on austerity measures being passed through parliament, where Mr Tsipras faces resistance among his own MPs.
Despite the growing dissent at home he said he has no plans to resign.
Defending the deal, he said: “I assume responsibility for all mistakes I may have made, I assume responsibility for a text I do not believe in, but which I signed to avoid disaster for the country, the collapse of the banks.”
But he also attacked Greece’s creditors, saying “they wanted to take revenge”.