He said he's aiming for the intergovernmental treaty for more central fiscal control in the eurozone to be signed by the beginning of March.
"An intergovernmental treaty was not my first preference, nor that of the most of the member states," he said, warning, "it will not be easy, legally speaking".
It was a mutual intergovernmental self-defense treaty which also promoted economic, cultural and social collaboration.
In addition, the opinion elaborated on the interpretation of the intergovernmental treaties underlying the European Union.
An intergovernmental treaty, whilst it doesn't carry with it the same dangers for Britain, nonetheless is not without risks.
The fear is not the possibility of an intergovernmental treaty between 26 EU countries.
One possible solution is an intergovernmental treaty to put strict caps on government spending and borrowing relative to the current year GDP.
The ownership and use of the space station is established by intergovernmental treaties and agreements.
Either we proceed using the Community method or we take a back seat and watch while Member States proceed by means of an intergovernmental treaty.
It was negotiated and we have an intergovernmental treaty that recognises this.