Source:-https://www.ndtv.com Patna: Rashtriya Janata Dal (RJD) chief Lalu Prasad Yadav, currently in jail, on Sunday took a shot at Prime Minister Narendra Modi’s “double engine” slogan for the BJP-Janata Dal (United) coalition terming it a “trouble engine”, ahead of the second phase of elections in Bihar.“It is a trouble engine, not a double engine. Where