That's it for today - we're ending our coverage of the Greek debt crisis on this page. You can follow the latest developments on the BBC News website, where we shall be reporting on the details of the reform proposals submitted by Greece. The country's creditors will examine the plans, and decide whether they meet the requirements for a further bailout - and a lifeline for an economy on the brink. We leave you with an image of a riot policeman, standing guard at a demonstration in central Athens as the sun sets.

Image source, Getty Images

... about the reform proposals from Stathis Kalyvas, professor of political science at Yale.

In a meeting with US Treasury Secretary Jack Lew earlier today, German Finance Minister Wolfgang Schaeuble jokingly suggested swapping Greece with debt-ridden Puerto Rico.

Greek journalist Ilias Siakantaris tweets in response:

Martin Selmayr tweets again, clarifying that the Greek proposal is in order.

Some doubts are emerging about the delivery of the Greek proposals. Asked if he has received them, Martin Selmayr, the head of cabinet for European Commission President Jean-Claude Juncker, says in the first of two tweets "Not yet". Then he points out that signed letters are needed.

So it seems that even if he has received the new proposals, he may regard them as incomplete.

The Wall Street Journal's Nektaria Stamouli tweets:

The English-language site of Greek newspaper Kathimerini profiles the new Finance Minister Euclid Tsakalotos.

BBC correspondent in Athens tweets:

More images from the pro-Europe demonstration in Syntagma Square in Athens this evening:

Image source, Getty Images

Image source, Reuters

The crisis in Greece is the biggest test the European Union has ever faced. It is also the hardest test yet for the eurozone's most powerful leader - German Chancellor Angela Merkel.

Here is what The New Yorker's George Packer said of the chancellor's attitude to Europe in a detailed profile last year, external :

Analyst Yannis Koutsomitis quotes a source detailing the numbers in the Greek proposal:

The BBC's Europe correspondent, Chris Morris, tweets:

What if Greece exits the eurozone? BBC World News TV put the question to the IMF's chief economist, Olivier Blanchard, who said:

Greece will hand in its proposals to secure a third bailout "shortly", the leader of the country's junior coalition partner has said. Panos Kammenos was speaking after a cabinet meeting. The country has until the end of Thursday to make what the EU president hopes are "realistic" suggestions for reforms.

In a glorious gift for symbolism fans, as the eurozone crisis continues, the euro sculpture is currently being renovated near the old ECB headquarters in Frankfurt, Germany.

Image source, Getty Images

British historian Tom Holland tweets that now is a great time to visit Greece. The BBC has advice from travel experts here. 

Image source, AFP

What happens if Greece leaves the euro? No one has left before and no one was meant to leave - so no one really knows. But analysts scrabbling for a precedent keep turning to the example of Argentina, which defaulted on its debt in 2001. 

The Financial Times (paywalled) sounded out the reaction to the Greek crisis in Buenos Aires, external. Roberto Lavagna, the Argentine economy minister who served after the default and is credited with helping the economy to recover, told the FT that the insistence on austerity was misguided:

If you think you're busy, take a little moment to reflect on how much is on the plate of Germany's foreign minister, Frank-Walter Steinmeier.

He's not only trying to negotiate a deal with Iran over its nuclear programme, but is having to watch what happens if Greece ends up slipping out of the eurozone.

Middle East analyst Laura Rozen is in Vienna for those Iran talks - that are approaching their own deadline.

More from Mr Schaeuble, who reportedly joked in his press conference that he would make the US an offer to swap Greece for Puerto Rico, which has also defaulted on its debts.

Puerto Rico's debt is roughly €64 billion, compared with Greece's €345 billion. So Mr Schaeuble is out on a limb there.

(For the record, the image above of the German finance minister sticking out his tongue is not in fact from today's press conference.)