Congress said today Sonia Gandhi's surgery in a US hospital has been successful. Congress is keeping details of the nature of Sonia Gandhi's illness strictly under wraps. In her absence, the party's heir apparent Rahul Gandhi has been put in joint command of the party. Rahul Gandhi is part of a four-member panel that will lead the Congress in Sonia's absence, however, at the moment Rahul is with Sonia on her bedside.