Why would Obama or anyone else believe going back to pre-1967 borders be a solution to this conflict. Was it not an Arab coalition that attacked Israel with the intention of destroying it when those borders were in effect. This only emboldens the terrorist elements in the region to continue their tactics of taking human lives, men women and children.
Law expanding definition of terrorist activity passes first Knesset reading (Haaretz)
from the article: Netanyahu tells Obama: Israel cannot go back to the 1967 borders