Cricketer-turned-politician Gautam Gambhir tells NDTV that he used to be a cricketer, but isn't one anymore as he takes to a new "field", politics. The BJP Lok Sabha candidate from the East Delhi constituency says, "I hope I can change a lot of things in the society through this platform and touch a lot of lives." Mr Gambhir, who has had public altercations with Jammu and Kashmir leaders Omar Abdullah and Mehbooba Mufti, also tells NDTV that national security is a top-most agenda, according to him.