In this season of troubles, the ruling BJP has a new problem. How to separate the four party veterans who have rebelled against Prime Minister Narendra Modi and party chief Amit Shah, from other party leaders who are making critical comments after the BJP's election debacle in Bihar. The veterans - LK Advani, Yashwant Sinha, Murli Manohar Joshi and Shanta Kumar - have demonstrated by holding a series of meetings today they are in no mood to stop pressuring the party on their demand that accountability be fixed for the party's humiliating defeat in the Bihar assembly election.