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.
Germany warns of possible attacks on public transport in Istanbul (Reuters)
from the article: Netanyahu tells Obama: Israel cannot go back to the 1967 borders