Armenian President Robert Kocharian has expressed gratitude for the actions taken by Russia after the crash of the Armavia Airbus A320 near Sochi in a telephone conversation with President Vladimir Putin. \"The Armenian president expressed gratitude for Russia\'s efficient and full-scale involvement in the rescue operation after the crash and congratulated the president for the successful completion of efforts to recover the flight recorders,\" the Kremlin said, adding that the conversation was initiated by Kocharian. Putin \"expressed hope that the recovering of the black boxes, which became possible as a result of the unique skills of experts, will allow to uncover all the details of the crash,\" the Kremlin said. (Interfax)