The EEC Council of Ministers decides to harmonise indirect taxes in the Community, to adopt the principle of the added-value tax system and to approve the first medium-term economic policy programme defining and fixing the aims of the economic policy of the Community for the years ahead.
Mr Alain Poher is re-elected president of the European Parliament.
The United Kingdom re-applies to join the Community. It is followed by Ireland and Denmark and, a little later, by Norway. General de Gaulle is still reluctant to accept British accession.
A summit is held in Rome, Italy, to celebrate the tenth anniversary of the signature of the EEC and Euratom Treaties. Heads of state or government express their intention of bringing into force the Treaty merging the institutions of the three Communities as of July 1, 1967.
The Commission signs the final Act of the General Agreement on Tariffs and Trade (GATT) multilateral negotiations (Kennedy round).
The Merger Treaty enters into force, thus fusing the executives of the European Communities (ECSC, EEC, Euratom). From now on, the European Communities will have a single Commission and a single Council. However, both continue to act in accordance with the rules governing each of the Communities.
The Council of the European Communities holds its first session with Germany at its Presidency.
The new Commission, with Jean Rey as its president, takes office.
The Commission renders an opinion on the applications for EC membership of the United Kingdom, Denmark, Ireland and Norway.
The institutions hold their annual joint meeting and discuss the outlook for development of the Communities following the merger of the institutions.