Vartan Oskanian and Elmar Mammadyarov met separately at the U.S. Embassy in London on 15 April with the three co-chairmen of the Organization for Security and Cooperation in Europe (OSCE) Minsk Group, RFE/RL\'s Armenian Service reported. For reasons that remain unclarified, the two ministers did not meet face to face, although they have done so on several previous occasions over the past 12 months. Oskanian declined to comment on the talks, while the Armenian Foreign Ministry said in a brief statement they focused on preparations for a meeting next month between President Kocharian and his Azerbaijani counterpart Ilham Aliyev. Mammadyarov for his part told RFE/RL\'s Azerbaijani Service on 15 April that the London talks represented the continuation of his series of discussions with Oskanian under the Minsk Group aegis. Mammadyarov said Baku wants the return of all territories currently occupied by Armenian forces and the return to their former homes of all Azerbaijani displaced persons. He added that Baku \"understands\" Armenia\'s insistence on security guarantees for the Armenian population of the unrecognized Nagorno-Karabakh Republic. (RFE/RL)