Hanoi, April 8 -- Leaders of countries and political parties of Cuba, the Democratic People's Republic of Korea (DPRK), the US, Belarus, Kazakhstan, Mongolia, Palestine and Nicaragua have sent messages and letters of congratulations to Vietnam's newly elected key leaders, following the elections by the country's National Assembly. The messages were extended on the occasion of To Lam, General Secretary of the Communist Party of Vietnam (CPV) Central Committee, being elected State President; Le Minh Hung being elected Prime Minister; and Tran Thanh Man being elected Chairman of the National Assembly. Congratulating General Secretary To Lam on his election as State President, First Secretary of the Communist Party of Cuba Central Committee a...