As of now, except for the PM and his negotiators, the deal is still and "Unclear Deal". So it is too premature for the PM to take satsifaction. Further more, it will be futile to believe that the US will support India if at anytime it feels that its own interests are at stake.
The best way for any Govt to make it an inclusive negotiation for such important subjects, is to include all the major parties in the negotiations. Remember, Mr.Narasimha Rao as PM had deputed Mr. Vajpayee to the UN. But, in the set up that is in place now, the ruling combine views the oppostion as enemies.