Greek commitments are to whom and by what rights?

The statement by two apponited EU officials, just released, sums up the contempt for democracy widespread throughout the Eurozone. It may be read in full in pdf format from here, but this sentence states it all:

We fully trust that Greece will honour the commitments undertaken in relation to the euro area and the international community. President of the European Council Herman Van Rompuy and President of the European Commission José Manuel Barroso

As elsewhere within Europe, the Greek Parliament was elected by the people of Greece to represent the interests of the people of Greece alone. If the Greek people determine by referendum or otherwise, that they see their interests as being different to whatever the Greek politicians have earlier indicated that they might support, then such commitments cannot be binding upon the Greek Nation!