At first glance, I said, "Whaaa?" The guy is the two time PM of a country that has succeeded in putting off negotiations for decades. They have been offered 99% of what they demanded of their victims and still denied them statehood. As though Palestinians need their permission...but that is another matter.
Getting beyond the first glance... I guess he could be considered influential in the way Hitler was an effective leader or Satan the way would be charismatic if he took human form. Definitely not in a good way, though. He is on record conceding to the Palestinians a demilitarized state. Doesn't that say it all? Who would accept that?