The INDIA bloc appears to be unravelling as a third key leader - Bihar Chief Minister Nitish Kumar - is likely to change camp. Sources said it is likely that Mr Kumar, in a last-minute U-turn, will partner with the BJP in the coming Lok Sabha elections. Over the last two days, two key leaders - Mamata Banerjee and Arvind Kejriwal - have ruled out any alliance with the Congress in Bengal and Punjab.