How could the Palestinian negotators headed by the chief Buffoon have doubts when the Americans provided guarantees?

"..but that the “Americans agreed to provide guarantees which would not turn our faces red” regarding the future borders."  How could any Arab not trust American guarantees when given to Arabs?  Just ask the victims of Sabra and Shatila massacres about American guarantees to protect the camps after the withdrawal of PLO forces from Lebanon.