(1) The inadmissability of acquisition of territory by war and (2) the withdrawal of Israeli forces from occupied territories. Lord Caradon, the chief author of the resolution had this to say after the fact: It was from occupied territories that the Resolution called for withdrawal. The test was which territories were occupied. That was a test not possibly subject to any doubt. As a matter of plain fact East Jerusalem, the West Bank, Gaza, the Golan and Sinai were occupied in the 1967 conflict. It was on withdrawal from occupied territories that the Resolution insisted. So yes, lets not reinvent the wheel. Israel must stop playing its illegal land grab game and withdraw to its legally recognised borders prior to this war....thence to enter negotiations with respect to any adjustments agreed by both sides.
from the article: EU: Abbas close to accepting direct Mideast peace talks