Don't get excited about these shameless creatures please. This is all drama forced upon Sonia and Commies by Manmohan who is determined to see through the nuclear deal. Whatever the commies say in public, it is them who gave time to Congress to see support from Mulayam. Commies do not want their ideology to be suffered. That is what they are interested about. If they are really interetsed in stopping the nuclear deal, they had many chances to pull the govt down before Mulayam came out with support.
