A day after Bihar BJP chief Samrat Choudhary vowed to reduce Chief Minister Nitish Kumar and his party to dust in the next Lok Sabha and Assembly elections, Mr Kumar said leaders of the saffron party have become "brainless". The JD(U) de facto leader was replying to a query from journalists about Mr Choudhary's remark that Mr Kumar will be turned to dust (' mitti mein mila denge ') in the next general elections for his "betrayal". "They (BJP) are brainless ( Buddhihin ) people. Tell him (Samrat Choudhary) to do what he said. I have never used such words in my entire political career. No sensible politicians use such words. I have also worked with Atal Bihari Vajpayee, I have a lot of respect for him," Nitish Kumar said. The state BJP president had said at a function here on Saturday that Nitish Kumar had "backstabbed" the BJP and joined hands with RJD chief Lalu Prasad to "pursue' his prime ministerial ambitions. "Wi...