Greek Finance Minister Yanis Varoufakis makes a statement in Athens, Greece July 5, 2015. [Photo/Agencies]

Finance minister resigns

Greek Finance Minister Yanis Varoufakis announced his resignation on Monday, a day after Greeks delivered a resounding 'No' to the conditions of a rescue package.

In a statement, Varoufakis said he had been "made aware" that some members of the euro zone considered him unwelcome at meetings of finance ministers, "an idea the prime minister judged to be potentially helpful to him in reaching an agreement."

The margin of victory was likely to strengthen the young prime minister's defiance toward Europe. Tsipras was voted into office in January on a promise to repeal bailout austerity.

"This victory for the 'no' camp will unfortunately embolden the government, but is likely to do little to convince the creditors that Tsipras is a trustworthy negotiating partner who has any ability to implement a deal," said Megan Greene, chief economist of Manulife Asset Management.

"Any deal for Greece will involve a much larger fiscal adjustment than the one on which Greeks voted today. I don't think that Germany in particular will be willing to make any concessions for Tsipras."

Opposition conservative New Democracy lawmaker Vangelis Meimarakis said he was expecting Tsipras to keep his pledge for a quick deal.

"If we don't have an agreement within 48 hours as the prime minister promised, then we are being led to a tragedy," he said.