Since ending occupation in Gaza rockets into Israel haven't stopped flying, even now. Why then should Israeli's beleive all acts of war against Israel from the WB would stop the moment Israel would draw back behind the green lines? By the way - before the 6-day war, wich started after Israel was on the brink of being attacked by Egypt who sent away the UN forces at it's border with Israel there were acts of terror too. It's not about territory, it's about the fact that a non-islamic nation exists in the middle of Arab states.
Turkish military returns fire into Syria after rockets hit border town again (Reuters)
from the article: Soldier's murder was latest in trend of terror by PA security