Mosab Hassan Yousef, a Palestinian individual of paramount importance, embarked upon a clandestine mission for Israel's internal security agency, Shin Bet, a tenure that persisted for an impressive duration of ten years, specifically from the year 1997 to 2007.
Here is the rephrased text:
Shin Bet, during his tenure, viewed Yousef as its most invaluable and treasured asset within the Hamas leadership, crediting his significant contributions to the successful prevention of numerous suicide attacks and targeted assassinations aimed at Israelis. Additionally, his efforts led to the exposure of multiple Hamas cells, thereby facilitating Israeli efforts to apprehend numerous militants, including his own father, a highly influential and prominent Hamas leader, Sheikh Hassan Yousef.
Munjed Al-Muderis is a renowned Australian surgeon of Palestinian origin, who was born in 1975 in Jerusalem.