MOSCOW, Dec 1 (Reuters) - Russia and Vietnam have agreed to expand production of Russia"s Sputnik V COVID-19 vaccine in Vietnam, Russian sovereign wealth fund RDIF, which markets the vaccine internationally, said on Wednesday. The deal between Russia and Vietnam"s state-owned VABIOTECH and Vietnamese investment company Sovico Group, was signed during Vietnamese President Nguyen Xuan Phuc"s visit to Russia this week. It paves the way for expansion of Sputnik V production in Vietnam. The agreement will also allow VABIOTECH, which had already been producing Sputnik V, to begin manufacturing the one-shot Sputnik Light vaccine in Vietnam, RDIF said.