RJD leader Tejashwi Yadav today mocked Nitish Kumar over his latest flip-flop as the Bihar Chief Minister listened patiently a debate before seeking a trust vote in the assembly. Mr Kumar has switched alliances five times since 2013, remaining the Chief Minister throughout. "Will Modi ji take guarantee that Nitish Kumar won't switch again," Mr Tejashwi wondered, pointing to Prime Minister Narendra Modi's "guarantee" assurances.