Drachma revolt adds unease to Greece’s alliance

ATHENS, Greece — Prime Minister Alexis Tsipras’ power-sharing acrobatics look harder to perform by the day.

Opposition parties are propping up his left-wing government long enough to negotiate a new bailout and keep the country in the eurozone, while senior members of his own party, Syriza, have revived a campaign to bring back the drachma.

On Thursday, lead bailout negotiators are due in Athens. They will intensify a new round of talks for a massive third rescue package after Athens and lenders from other eurozone countries reached a bitterly fought compromise.

But Tsipras has a more pressing priority. He will be battling to keep control of Syriza at a meeting of the party’s 200-member executive, facing dissenters who argue the Left has abandoned its principles over the past six months under the country’s popular prime minister.

The uncertainty has renewed questions over whether Greece can — or should — endure two more years of austerity and bailout policies that have battered its economy and the political parties that implemented them.

“Tsipras doesn’t have many options,” said Dimitri A. Sotiropoulos, an associate professor of political science at the University of Athens, who sees a snap election in November as a strong possibility.

“One is to strengthen his position in his party ... but he is not fond of seeking confrontation,” he said. “The other is to call an early election. The timing is sensitive: It would have to be after the bailout talks are concluded, but before opposition parties can regroup.”

In a vote three weeks ago, Tsipras effectively lost his majority in parliament, when nearly one-fourth of Syriza’s lawmakers refused to back new austerity measures. Pro-European Union opposition parties were left to save the bill.

Twitter Inc. shares plunged to their lowest point in more than a year a day after interim chief executive and co-founder Jack Dorsey bluntly told analysts the social media platform faces serious problems.

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