MOSCOW, December 15 (RIA Novosti) - Russian President Dmitry Medvedev will meet in Moscow on Tuesday with Vietnamese Prime Minister Nguyen Tan Dung to discuss energy cooperation, a source in the Kremlin said.

Russia plans to step up cooperation with Vietnam primarily in oil and gas production, trade, as well as in arms sales.

"The meeting will be focused on the development of bilateral political dialogue at all levels," the source said adding that perspectives for the cooperation in energy sector will be also in the focus of the meeting.

Last week Russian energy giant Gazprom announced plans to invest 9.43 billion rubles ($319 million) in oil and gas offshore development in Vietnam in 2010, under PSA projects.

The Vedomosti business daily recently reported that the countries are close to signing deals on the purchase of six Russian Kilo class diesel-electric submarines and 12 Su-30MK2 Flanker-C multirole fighters.

According to Russian estimates, trade between the two countries in 2007 exceeded $1.5 billion.