The developments will be turbulent in all cases, because if some agreement is reached, it can only be painful. There will be problems with regard to the parliamentary group of SYRIZA - whether it will remain united and to what extent. Obviously, there will be members who will not agree with the deal. I do not mean the Left Platform of Minister of Development and Energy Panagiotis Lafazanis. Although they are opposed to reaching an agreement with creditors, they have no internal discipline and their position will depend on the agreement between Lafazanis and Tsipras. But there are many unpredictable MPs. I think that at least some members of SYRIZA will leave the parliamentary group because of their opposition to a possible agreement.
In all cases, the pro-European parties too will have different opinions on the terms of the agreement. As I said, New Democracy will definitely have arguments against them. However, it is still the better option.
If no agreement is reached, which is also quite possible, the economy will totally collapse. Whether there will be capital controls or the European Central Bank will possibly provide some liquidity to prevent a banking crisis is a question the answer to which is not yet clear. But the real economy is languid.
I suppose that state institutions such as hospitals, the police, etc. will have serious problems. Schools will anyway be closed during the summer but there will definitely be problems with transport, at the peak of the tourist season at that. It will be a very difficult period and the long-term prospects of Greece as a country and economy will become clear in the autumn. With or without an agreement, then we will know which way Greece will be going. It is simply because even if an agreement is reached now, its application is very much in question.
Are any changes in government possible? Is there a probability of forming a coalition government with the participation of all parties for example?
Such options are under consideration but now nothing can be predicted. I think that even if a coalition government involving the opposition parties is established, there is no leadership figure other than Alexis Tsipras. I do not think Antonis Samaras could return as Prime Minister. He is so discredited that he has no chance.
I do not see a figure in the other parties that could take up this post either. I therefore consider that Tsipras will continue to be Prime Minister, even in the case that his current cabinet or parliamentary coalition has reshuffled.