Hyderabad (Telangana) [India], November 14 (ANI): Former Telangana Minister and BRS leader T Harish Rao has written an open letter to the Leader of Opposition in the Lok Sabha, Rahul Gandhi, challenging him to question the Revanth Reddy government over its failure to fulfil key promises made in the Congress election manifesto.With Rahul Gandhi arriving in Hyderabad on Saturday to participate in the Bharat Summit