Sydney, Aug. 24 -- Professor Carl Thayer, a Vietnam specialist at the Australian Defence Force Academy, University of New South Wales, has said that Vietnam has undergone decisive transformations, building its role and position in the international arena. Speaking to Vietnam News Agency correspondents in Australia on Vietnam's 80-year journey of reconstruction, nation-building, defence and development, Prof. Thayer noted that Vietnam's strategic shift was marked by opening its economy, joining the Association of Southeast Asian Nations (ASEAN), the Asia-Pacific Economic Cooperation (APEC), the World Trade Organisation (WTO), and signing multiple free trade agreements. Vietnam has become increasingly confident in promoting multilateralism,...