– Greece has entered the twilight zone. Out of money, cut off by its creditors, its banks shut, the struggling country will vote Sunday on whether to accept painful cutbacks in return for desperately needed financing.

Between now and then Greece remains suspended between collapse and an uncertain rescue, between membership in the 19-member euro club and the possibility of a humiliating exit.

A look at what's ahead:

Q: What is the next deadline?

A: On Tuesday, the main part of Greece's bailout deal expires. With no agreement to release the last 7.2 billion euros ($8.1 billion) from that deal, Greece is on its own.

An E.U. official said after the deal expires, it would take weeks for creditors — other eurozone states and the International Monetary Fund — to put a new agreement on track.

Tuesday is also the day Greece has to pay a debt of about 1.5 billion euros ($1.7 billion) to the IMF. If Greece doesn't pay, it will take a while for the IMF to actually declare Greece in default. Credit ratings agencies say arrears to the IMF will not immediately trigger a default crediting rating for Greece.

Q: And after Tuesday?

A: Prime Minister Alexis Tsipras has called a referendum for Sunday. Greeks will be asked to vote if they support a bailout deal that creditors have proposed that involves budget cutbacks and tax increases in exchange for the remaining loans in the country's rescue program.

The catch, however, is that by the time of the vote, Greece's bailout program would have run out. So the Greeks would be voting on an offer that has technically expired.

A "no" vote could mean euro exit is closer for Greece, as the country would have no outside financial aid.

Some think a "yes" could restart talks. Joerg Kraemer, chief economist at Commerzbank, says that "should the electorate vote in favor of a compromise, the eurozone members will not be able to ignore that and will resume negotiations."

Q: Is a deal to save Greece still possible?

A: Technically, yes. E.U. economic official Pierre Moscovici said Monday that a deal was "a few centimeters" away.

E.U. officials and creditors indicate they are still willing to strike a deal. But Tsipras has dismissed all their proposals so far as insufficient.

Q: Will Greece leave the eurozone?

A: Many see Greece's decision to close the banks as a step closer to leaving the euro.

The banks' trouble is a bad sign, because the Greek government would need billions of euros if it has to rescue them without outside support. Until Sunday, the ECB had been keeping the banks afloat by increasing emergency credit as deposits fled.

A modern economy needs functioning banks. For Greece that would mean printing a new currency and using it to refloat the banking system.

Q: If Greece leaves the euro, will the shared currency fall apart?

A: Many economists say no. Since its troubles over high government debt started in 2009, the eurozone has built anti-crisis measures. Those include a pot of money to rescue troubled governments and an offer by the ECB to buy the bonds of governments facing market pressure. The ECB's current 1.1 trillion euro bond-buying monetary stimulus program has further insulated markets from panic.

In the longer term, however, some experts think a Greek departure sets a bad precedent. Investors might think other countries could leave, and would require higher interest to lend those countries money.

Associated Press