...standing up to the Ka-rats who wanted dictate terms.
If India signs up the deal, it will be a strategic blow for India's super power plans. Communists who do not want to see India attain those heights are trying to obstruct the unstated strategic import of the deal.
NDA, UPA should tell the communists to pack off. The split in communist bastion shows that there are some national elements left in there. Good if we can see the back of Karat, Raja, Bardhan, Yechuri, etc.