I don%u2019t know much about nuclear deal. I%u2019m not qualified to say if it%u2019s good or bad for the country. But from various discussion, I can guess India lose something and gain something from the deal. Probably Cong is happy about the gains and Left is concerned about the losses. I don%u2019t know the position of other partners of UPA on this matter. But by paying no heed to Left, Cong is definitely violating the basic principle of coalition govt. If Left believes the deal is not good for the country, they must oppose it and they have every right to withdraw the support to govt. Cong should remember, it%u2019s they who depend on Left to run the govt. and not other way round. Left has already done enough save the nation from another election by extending support to Cong to form the govt. though they are in different pole to Cong politically. Left have no obligation to face Cong humiliation. They may lose maximum a dozen of seats if another election is held as an immediate effect. They should not be afraid of it because Cong has to fall on Left again if they have to form the govt. If the deal is really bad for the country the people of India will not forgive Cong. in long run.
