Greece had to be allowed to join the EU..and the Euro. It is all part of the Master plan. The United States of Europe. Only when it becomes a Federation, there will be no different countries, just one big country, much like the United States of America. This is why, when countries voted whether to join the EU or not, a negative vote was swept aside, and the vote held again and again until the 'correct' result was achieved. So Greece will not be allowed to leave, it would go against the Master Plan.
Next part of the plan is for Turkey to join. Lynda is probably right...the debt will be written off. Also, all those migrants at Calais will be given an amnesty and allowed to go to whatever country they want.
Greece managed perfectly well as a country...until they joined the EU and the Euro.