And if not a UAV fired missile can help him on his way - remove arafat and you reduce the problem by another 70% in my opinion. Isreal is doing very well so far - reduced number of suicide bombings - palestieans turning on their own drug and arms runners (ie tunnels to eygpt being uncovered and those involved being turned into isreali military and shot etc.) fully build the wall.
Keep the settlers in place. Encourage economic development in the palestiean territories to reduce the lure for the terrorist criminals to flourish - encourage peaceful economic intergration with isreal - this will further boost the isreali push to remove the terror threat.
