varanasi, June 26 -- The Centre on Thursday rolled out India's first hub-and-spoke aviation model from Varanasi, a move aimed at allowing passengers from tier 2 and tier 3 cities to access international destinations through major Indian airports without having to repeat baggage and immigration formalities during transit. Civil aviation minister Ram Mohan Naidu said the initiative has been launched with Air India as the first participating airline. Under the new system, passengers flying from cities such as Varanasi can complete check-in and immigration formalities at their origin airport, with baggage tagged through to their final international destination. "This initiative removes those additional steps," Naidu said. Civil aviation secreta...