Russian President Vladimir Putin stressed the importance of expanding his country’s strategic partnership with Vietnam, state media reported, at talks with Vietnamese President To Lam on the first day of his state visit to the south-east Asian country. The Russian leader also invited Lam to participate in commemorations in Moscow next year marking the 80th anniversary of the victory over Nazi Germany in World War II, the Russian state news agency TASS reported. Putin arrived in Hanoi late on Wednesday after a visit to North Korea. He is expected to attend a state banquet on Thursday after meet…