The biggest stories of December 19, 2013

John Kerry expresses regret over the handling of the Devyani Khobradage case, but the New York US Attorney Preet Bharara justifies ordering her arrest; India's hits back, says New Delhi is only concerned with the US State Departments response; The Congress takes credit for passing the anti-corruption bill, in the same breath hints it will tie up with fodder scam convict Lalu Yadav in the Lok Sabha polls; and more in our news wrap of the day.