What Scots will do if the mandate contained in the SNP manifesto is first delivered then ignored will determine whether the UK survives as a political entity.
While the Riga Eurogroup meeting on Friday is not the last chance Greece has to be rescued, it is probably the last chance for it to achieve a result outside of crisis measures.
Negotiations over a new bailout for Greece are approaching a critical stage. And if the country runs out of cash, it might just feel like the end of the world for many Greeks.
Doing away with perks for non-doms might play well on the doorstep, but it is very hard to quantify the economic impact of Labour's latest policy pledge.
It's the meeting that had to happen. A radical left-wing Greek prime minister and a centre-right German chancellor whose ministers have been urging her to throw Greece out of the eurozone.
Eurozone finance ministers approve reform proposals by Greece - including measures to combat tax evasion and fuel smuggling - in support of its application for a four-month extension of its bailout.
Instead of "we were kicked out", it would be sold as "we escaped" - and I think however positively today's deal is spun, the push for Grexit will grow stronger as constraints become obvious.
There is a sea change going on within Syriza. I've heard people who were staunch believers in a euro that can accommodate by negotiation a radical left government say, effectively, they were wrong.
The eurozone and IMF have done a deal with Greece, extending its bailout for four months in return for a commitment to run all policy measures with significant economic impact past the lenders.
Today is the Greek equivalent of Gettysburg. After the ECB agreed to extend emergency lending for Greek banks for only a few days, the Greeks have until tonight to reach a compromise deal.
Greece begins to cave in on a bailout deal offered by eurozone authorities, but Germany rejects the new proposal for an extension - so the poker game is not over.
Documents leaked to me last night shed new light, but not total clarity, on the dramatic breakdown of talks in Brussels over a new Greek bailout deal.
While Labour is tight lipped and ultra-orthodox at present, it is entirely possible to imagine the common ground of a Labour-SNP-Green coalition, or a "supply and confidence" type arrangement.
For the second time in 24 hours, Greek negotiators at the EU summit in Brussels, believe that Germany has stymied an agreement over extending their stricken country's debt facility.