New Delhi, Sept 15 (UNI) Congress leader and Leader of the Opposition in the Lok Sabha Rahul Gandhi on Tuesday expressed anguish over the loss of lives in the devastating floods in Bihar and called for urgent and effective relief and rescue operations, while appealing to party workers to assist people affected by the calamity. In a post on social media platform X, Gandhi described the loss of life as "extremely sad and heart-wrenching" and extended his condolences to families who had lost their loved ones. "I express my deepest condolences to the families who have lost their loved ones…