The IMF criticism of the Greek deal is interesting, as some journos are saying that behind the IMF stands the US, which thinks that Greece will never pay off its debts, and therefore has to have a partial write-off.
Even further, some journos are saying that the US disapproves of the whole EU neo-liberal approach, although this sounds like conjecture. But I guess that some senior US figures are leaking this stuff, all very convoluted. The US tends to favour more Keynesian measures, although European economies are quite prepared to do this surreptitiously, when they think no-one is looking.
Maybe also the US is fearful of Greece going into the Russian orbit. Of course, most of this stuff is hidden away, not for prying eyes, that is you and me!