This is politics and political business in which these leaders of the political parties are survivng by doing such nasty politics at the cost of the nation's interest .Leaders have no other work except doing politics for the industry of political parties ..No worry ,no salary cut ,living with expenses given by the ordinery people of India ,showing their faces in the TV ,getting TRP ,marketing their political Industry by doing only politics .Ask them to stay 6 months with the farmers who commiting suicide due to high debt and mismanagement of the gov machinery ,They will simply blame other parties for the misery and will do politics to survive.So my dear friend this is the reason these parties didnot support Kalam as president but now they are making Kalam as scapegoat for supporting the bill .But Kalam is a clear person and donot survive on politics and he has always suported nuclear deal and will always support