Complex sentence: Arad, an Israeli citizen, was born in 1969 in London, where his father, Moshe Arad, a former Israeli ambassador to the United States and Mexico, was on a diplomatic mission.
Split into simpler sentences: Arad, an Israeli citizen, was born in 1969 in London. London was where his father, Moshe Arad, a former Israeli ambassador to the United States and Mexico, was on a diplomatic mission.