It's just at an earlier stage, the eurozone is still very young. Monetary union has of course always implied ever closer union and the gradual dissolution of n

It's just at an earlier stage, the eurozone is still very young. Monetary union has of course always implied ever closer union and the gradual dissolution of nation states - full political and fiscal Union. So the squabbling over who will fund Greece is rather silly in this context, if you want a single currency and market you must accept all the consequences which follow. That will take quite some time though, and as with the formation of the U.S. this is often a messy process.