Win Aung would later join the armed forces, where he served as a military intelligence officer.
Since June 6, 1990 Win Aung served as an ambassador to Germany and the UK until he was appointed as Minister of Foreign Affairs in November 1998.
In September 2004, he was dismissed from his post, along with several other ministers, following a purge of members of the Military Intelligence faction of the State Peace and Development Council.
Win Aung was a close associate of former Prime Minister Khin Nyunt, who was among those purged in September 2004.
[1] Win Aung's son, Thaung Su Nyein, is CEO of Seven Days News, a widely read journal in Myanmar.