The Agartala-Kolkata bus service cutting through Dhaka, flagged off by the Prime Ministers of India and Bangladesh, is aimed at reducing distances between people and places. But the move has created a huge gulf between the Communist Party of India (Marxist) or CPI(M)-ruled Tripura and the Centre. Tripura Chief Minister Manik Sarkar was not invited and neither were the chief ministers of Assam and Meghalaya, all states who share their borders with Bangladesh.