received by the Registrar (or such lesser period fixed by the LCIA Court). The LCIA Court may proceed with the formation of the Arbitral Tribunal notwithstanding that the Request is incomplete or the Response is missing, late or incomplete. A sole arbitrator shall be appointed unless the parties have agreed in writing otherwise, or unless the LCIA Court determines that in view of all the circumstances of the case a three-member tribunal is appropriate. 5.5 The LCIA Court alone is empowered to appoint arbitrators. The LCIA Court will appoint arbitrators with due regard for any particular method or criteria of selection agreed in writing by the parties. In selecting arbitrators consideration will be given to the nature of the transaction, the nature and circumstances of the dispute, the nationality, location and languages of the parties and (if more than two) the number of parties. 5.6 In the case of a three-member Arbitral Tribunal, the chairman (who will not be a party-nominated arbitrator) shall be appointed by the LCIA Court. 6.1 Where the parties are of different nationalities, a sole arbitrator or chairman of the Arbitral Tribunal shall not have the same nationality as any party unless the parties who are not of the same nationality as the proposed appointee all agree in writing otherwise. 6.2 The nationality of parties shall be understood to include that of controlling shareholders or interests. 6.3 For the purpose of this Article, a person who is a citizen of two or more states shall be