Point of clarification, the UN did not actually say that everything outside the '67 borders was palestinian territory. Just that those would be the borders of Israel. The reason for this is that the UN is not interested in intra-arab politics. Is Jerusalem Palestinian? Jordanian? Turkish? All three have held it in the last hundred years.
Donald Trump: Israeli settlement construction in West Bank should 'keep going' (Haaretz)
from the article: U.S.: Settlement freeze will be discussed during direct peace talks