Complex sentence: He served as Prime Minister of Israel from 2006 to 2009, as a Cabinet Minister from 1988 to 1992 and from 2003 to 2006, and as Mayor of Jerusalem from 1993 to 2003.
Split into simpler sentences: He served as Prime Minister of Israel from 2006 to 2009 and before that as a Cabinet Minister from 1988 to 1992 and from 2003 to 2006. Between his first and second stints as a cabinet member, he served as Mayor of Jerusalem from 1993 to 2003.