fied as between Contracting States to the extent that they are incompatible with this Convention.
Article 9
1. The European Committee on Crime Problems of the Council of Europe shall be kept informed regarding the application of this Convention.
2. It shall do whatever is needful to facilitate a friendly settlement of any difficulty which may arise out of its execution.
Article 10
1. Any dispute between Contracting States concerning the interpretation or application of this Convention, which has not been settled in the framework of Article 9, paragraph 2, shall, at the request of any Party to the dispute, be referred to arbitration. Each Party shall nominate an arbitrator and the two arbitrators shall nominate a referee. If any Party has not nominated its arbitrator within the three months following the request for arbitration, he shall be nominated at the request of the other Party by the President of the European Court of Human Rights. If the latter should be a national of one of the Parties to the dispute, this duty shall be carried out by the Vice President of the Court or if the Vice President is a national of one of the Parties to the dispute, by the most senior judge of the Court not being a national of one of the Parties to the dispute. The same procedure shall be observed if the arbitrators cannot agree on the choice of referee.
2. The arbitration tribunal shall lay down its own procedure. Its decisions shall be taken by majority vote. Its award shall be final.
Article 11
1. This Convention shall be open to signature by the member States of the Council of Europe. It shall be subject to ratification, acceptance or approval. Instruments of ratification, acceptance or approval shall be deposited with the Secretary General of the Council of Europe.
2. The Convention shall enter into force three months after the date of the deposit of the third instrument of ratification, acceptance or approval.
3. In respect of a signatory State ratifying, accepting or approving subsequently, the Convention shall come into force three months after the date of the deposit of its instrument of ratification, acceptance or approval.
Article 12
1. Any State may, at the time of signature or when depositing its instrument of ratification, acceptance or approval, specify the territory or territories to which this Convention shall apply.
2. Any State may, when depositing its instrument of ratification, acceptance or approval or at any later date, by declaration addressed to the Secretary General of the Council of Europe, extend this Convention to any other territory or territories specified in the declaration and for whose international relations it is responsible or on whose behalf it is authorised to give undertakings.
3. Any declaration made in pursuance of the preceding paragraph may, in respect of any territory mentioned in such declaration, be withdrawn by means of a notification addressed to the Secretary General of the Council of Europe. Such withdrawal shall take effect immediately or at such later date as may be specified in the notification.
Article 13
1. Any State may, at the time of signature or when depositing its instrument of ratification, acceptance or approval, declare that it reserves the right to refuse extradition in respect of any offence mentioned in Article 1 which it considers to be a political offence, an offence connected with a political offence or an offence inspired by political motives, provided that it undertakes to take into due consideration, when evaluating the character of the offence, any particularly serious aspects of the offence, including:
a. that it created a collective danger to the life, physical integrity or liberty of persons;
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