The threat is all very well and good, except for the fact that:Greece warns EU leaders: Allow us to fail and it's 'beginning of the end' for eurozone http://t.co/qbtWRSdvRX pic.twitter.com/gSUrGWjGrk— Trending Greece News (@greekolizer) June 9, 2015
1 Greece entered the eurozone of its own free will.
2 Greece's entry was on the basis of fraud by the Greek government.
3 The eurozone itself is flawed, and will fail anyway.
4 Greece's best option is to default and leave the eurozone.
5 A "fuck off" fund of money has been set aside to give to Greece when it leave the eurozone.
In other words, the threats are meaningless and irrelevant.