Abbas: Specific US assurances on borders needed - Yahoo! News

Palestinian President Mahmoud Abbas wants the U.S. to spell out its views on the borders of a Palestinian state before resuming direct negotiations with Israel, an adviser said Wednesday, raising a condition that Israel is unlikely to accept...
why should the USA have to express its views on the prospective borders as a pre-condition of direct negotiations?
is abbas looking for political cover?
in my opinion, this again evidences why abbas is not up to the job of representing the Palestinian perspective in formal negotiations