Bihar Chief Minister Nitish Kumar on Friday termed his past alliances with arch rival Lalu Prasad's RJD as a "mistake" that he committed twice but was determined not to repeat again. The JD(U) chief's remark came at a function where he shared the stage with Union Health Minister Jagat Prakash Nadda, who is also the BJP's national president. "Our relationship goes back to the 1990s... all the good work in Bihar has been done under our stewardship", said the JD(U) supremo, whose outfit was earlier called the Samata Party. Referring to the RJD, without mentioning it by name, the CM said, "Those who were in power before me did nothing. It was a mistake on my part to have gone with them on two occasions. But I do not wish to repeat that mistake. I shall stay here (with the NDA)". The Bihar Chief Minister, who had returned to the NDA in January, kept asserting during Lok Sabha polls, especially at rallies where he shared the stage with Prime Minister Narendra Modi, that he would now be w