BP and Kosmos Energy on 21 December announced a final investment decision for Phase 1 of the groundbreaking Greater Tortue Ahmeyim gas project. Kosmos said the decision was made with BP and the two state oil companies, Petrosen and Société Mauritanienne des Hydrocarbures et de Patrimoine Minier, following a meeting to agree final elements held in Nouakchott between President Mohamed Ould Abdel Aziz of Mauritania and President Macky Sall of Senegal.