The text of the Yalta Agreement: http://www.yale.edu/lawweb/avalon/wwii/yalta.htm
The text says that the countries of europe should have the right to choose institutions of there choice. Did that happen? No. But the effort was made at Yalta.
Text:
The following declaration has been approved:
The Premier of the Union of Soviet Socialist Republics, the Prime Minister of the United Kingdom and the President of the United States of America have consulted with each other in the common interests of the people of their countries and those of liberated Europe. They jointly declare their mutual agreement to concert during the temporary period of instability in liberated Europe the policies of their three Governments in assisting the peoples liberated from the domination of Nazi Germany and the peoples of the former Axis satellite states of Europe to solve by democratic means their pressing political and economic problems.
The establishment of order in Europe and the rebuilding of national economic life must be achieved by processes which will enable the liberated peoples to destroy the last vestiges of nazism and fascism and to create democratic institutions of their own choice. This is a principle of the Atlantic Charter - the right of all people to choose the form of government under which they will live - the restoration of sovereign rights and self-government to those peoples who have been forcibly deprived to them by the aggressor nations.
To foster the conditions in which the liberated people may exercise these rights, the three governments will jointly assist the people in any European liberated state or former Axis state in Europe where, in their judgment conditions require,
As to any "effort" re institutions, that just goes to my point. Yalta freed no one, but it did assure the enslavement of tens of millions at Soviet hands.