Complex sentence: Avishai Raviv was a member of Israel's Shin Bet or Shabak, Israel's Secret Police, as part of the Shabak Jewish Section, a controversial section of the Shabak that is used to monitor Jewish opponents of Israeli government activities.
Split into simpler sentences: Avishai Raviv was a member of Israel's Shin Bet or Shabak, Israel's Secret Police, as part of the Shabak Jewish Section. A controversial section of the Shabak that is used to monitor Jewish opponents of Israeli government activities.