Vientiane, July 19 -- The Vietnam-Laos Treaty of Friendship and Cooperation has remained the political and legal foundation underpinning the two countries' special relationship over the past 49 years, according to Prof. Dr. Boviengkham Vongdala, President of the Laos-Vietnam Friendship Association. Speaking to Vietnam News Agency correspondents in Laos on the occasion of the 49th anniversary of the signing of the treaty (July 18, 1977-2026), Boviengkham, former member of the Lao People's Revolutionary Party Central Committee and former Minister of Technology and Communications, described the landmark document as one of strategic significance and supreme importance to the safeguarding of the autonomy, existence and development of both nati...