Original sentence: The Lavon Affair also generated deep suspicion of Israeli intelligence practices and encouraged speculation and conspiracy theories that terrorist attacks against Arab and American targets could be the result of Israeli false flag intelligence operations or agent provocateurs working on behalf of Israeli intelligence, a belief that is still popular (especially in Arab countries)
Edited sentence: The Lavon Affair also generated deep suspicion of Israeli intelligence practices and encouraged speculation and conspiracy theories that terrorist attacks against Arab and American targets could be the result of Israeli false flag intelligence operations or agent provocateurs working on behalf of Israeli intelligence, a belief that is based on facts(especially in Arab countries)