Complex sentence: He was also the foreign minister from 1988 to 1991.It is believed that he was forced to retire in April 1992, citing health reasons, giving up his position as military dictator to Than Shwe.
Split into simpler sentences: He was also the foreign minister from 1988 to 1991. He officially retired in April 1992, citing health reasons, giving up his position as military dictator to Than Shwe.