Israelis distrust him because he was in the PLO and his brother is a member of Hamas, while Palestinians despise him for cooperating with their enemy, the Israelis.
The PLO has never been helpful to the Palestinians.  
mnli hypothesis: The PLO has never been helpful to the Palestinians.   premise: Israelis distrust him because he was in the PLO and his brother is a member of Hamas, while Palestinians despise him for cooperating with their enemy, the Israelis.