From right, background: Prime Minister Dmitry Medvedev and his Vietnamese counterpart Nguyen Tan Dang seen overlooking the signing of the memorandum on scientific and academic cooperation between the Moscow State University and the Vietnam National University in Hanoi, May14, 2013. From left, foreground: Do Van Hau, Chief Executive Officer, Oil-and-Gas PetroVietnam Corporation, and Alexander Dyukov, Director-General, Gazprom Oil.

14.05.2013#1468118

Prime Minister Dmitry Medvedev (right) and his Vietnamese counterpart Nguyen Tan Dang seen following their post-talks press statement at the Russian Government Reception House, May 14, 2013.

14.05.2013#1468102

Prime Minister Dmitry Medvedev (right) and his Vietnamese counterpart Nguyen Tan Dang seen making their post-talks press statement at the Russian Government Reception House, May 14, 2013.

14.05.2013#1468100

From right, background: Prime Minister Dmitry Medvedev and his Vietnamese counterpart Nguyen Tan Dang seen overlooking the signing of the memorandum on scientific and academic cooperation between the Moscow State University, represented by Rector Viktor Sadovnichy (right, foreground) and the Vietnam National University, represented by its President Phung Xuan Nha, May14, 2013.

14.05.2013#1468098

Prime Minister Dmitry Medvedev (right) meeting with his Vietnamese counterpart Nguyen Tan Dang before making their post-talks press statement at the Russian Government Reception House, May 14, 2013.

14.05.2013#1468086

Prime Minister Dmitry Medvedev (right) and his Vietnamese counterpart Nguyen Tan Dang making their post-talks press statement at the Russian Government Reception House, May 14, 2013.

14.05.2013#1468085

Vietnamese Prime Minister Nguyen Tan Dang seen making their post-talks press statement with Russian Prime Minister Dmitry Medvedev at the Russian Government Reception House, May 14, 2013.

14.05.2013#1468084

From right: Russian Prime Minister Dmitry Medvedev and Nguyen Tan Dung, Prime Minister of the Socialist Republic of Vietnam, seen during the introduction of the delegations at their talks in the Russian Government's House of Receptions, 14 May 2013.

14.05.2013#1467973

Russian Prime Minister Dmitry Medvedev, second from right, and Nguyen Tan Dung, left, Prime Minister of the Socialist Republic of Vietnam, seen during the introduction of the delegations at their talks in the Russian Government's House of Receptions, 14 May 2013.

14.05.2013#1467972

Russian Prime Minister Dmitry Medvedev, second from right, has a meeting in the Russian Government's House of Receptions with Nguyen Tan Dung, Prime Minister of the Socialist Republic of Vietnam, who is on an official visit to Moscow, 14 May 2013.

14.05.2013#1467867

Russian Prime Minister Dmitry Medvedev, second from right, has a meeting in the Russian Government's House of Receptions with Nguyen Tan Dung, Prime Minister of the Socialist Republic of Vietnam, who is on an official visit to Moscow, 14 May 2013.

14.05.2013#1467866

From right: Russian Prime Minister Dmitry Medvedev has a meeting in the Russian Government's House of Receptions with Nguyen Tan Dung, Prime Minister of the Socialist Republic of Vietnam, who is on an official visit to Moscow, 14 May 2013.

14.05.2013#1467865

Russian Prime Minister Dmitry Medvedev, right, has a meeting in the Russian Government's House of Receptions with Nguyen Tan Dung, Prime Minister of the Socialist Republic of Vietnam who is on an official visit to Moscow, 14 May 2013.

14.05.2013#1467863

Russian Prime Minister Dmitry Medvedev, right, has a meeting in the Russian Government's House of Receptions with Nguyen Tan Dung, Prime Minister of the Socialist Republic of Vietnam who is on an official visit to Moscow, 14 May 2013.

14.05.2013#1467861

Russian Prime Minister Dmitry Medvedev, right, seen during a meeting in the Russian Government's House of Receptions with his Vietnamese counterpart Nguyen Tan Dung who arrived in Moscow on an official visit, 14 May 2013.

14.05.2013#1467831

Russian Prime Minister Dmitry Medvedev, right, seen during a meeting in the Russian Government's House of Receptions with his Vietnamese counterpart Nguyen Tan Dung who arrived in Moscow on an official visit, 14 May 2013.

14.05.2013#1467830

Russian Prime Minister Dmitry Medvedev, right, seen during a meeting in the Russian Government's House of Receptions with his Vietnamese counterpart Nguyen Tan Dung who arrived in Moscow on an official visit, 14 May 2013.

14.05.2013#1467829

Russian Prime Minister Dmitry Medvedev, right, seen during a meeting in the Russian Government's House of Receptions with his Vietnamese counterpart Nguyen Tan Dung who arrived in Moscow on an official visit, 14 May 2013.

14.05.2013#1467828