Complex sentence: His first job was in the Legal Office in 1973 and most recently he served as the Secretary-General's representative and head of the United Nations Political Office for Somalia from 2002 to 2005.
Split into simpler sentences: His first job was in the Legal Office in 1973. He more recently served as the Secretary-General's representative and head of the United Nations Political Office for Somalia from 2002 to 2005.