however, be an obstacle to a unanimous vote. Failing a unanimous vote, the first stage shall automatically be extended for a period of one year.
At the end of the fifth year, the Council shall make such confirmatory statement under the same conditions. Failing a unanimous vote, the first stage shall automatically be extended for a further period of one year.
At the end of the sixth year, the Council shall make such a statement acting by means of a qualified majority vote on a report of the Commission.
4. Within a period of one month as from the date of this last vote, each Member State voting in a minority or, if the required majority vote has not been obtained, any Member State, shall be entitled to require the Council to appoint an Arbitration Board whose decision shall bind all Member States and the institutions of the Community. The Arbitration Board shall be composed of three members appointed by the Council acting by means of a unanimous vote on a proposal of the Commission. If the Council has not within a period of one month from the date of such requirement, appointed the members of the Arbitration Board, they shall be appointed by the Court of Justice within a further period of one month. The Arbitration Board shall appoint its Chairman. The Board shall give its award within a period of six months from the date of the vote by the Council referred to in paragraph 3, last sub-paragraph.
5. The second and third stages may not be extended or curtailed except pursuant to a decision of the Council acting by means of a unanimous vote on a proposal of the Commission.
6. The provisions of the preceding paragraphs shall not have the effect of extending the transitional period beyond a total duration of fifteen years after the date of the entry into force of this Treaty.
7. Subject to the exceptions or deviations provided for in this Treaty, the expiry of the transitional period shall constitute the final date for the entry into force of all the rules laid down and for the completion of all the measures required for the establishment of the Common Market.
PART TWO
BASES OF THE COMMUNITY
TITLE I
FREE MOVEMENT OF GOODS
Article 9
1. The Community shall be based upon a customs union covering the exchange of all goods and comprising both the prohibition, as between Member States, of