The Indonesian navy is looking for a submarine that went missing north of the tourist island of Bali with 53 people on board, according to the military on Wednesday. Military chief Hadi Tjahjanto claimed that the KRI Nanggala 402 was engaged in a training exercise when it failed to register for duty. He believes the submarine went down in waters about 60 miles (95 kilometres) north of Bali. Tjahjanto stated that the navy has sent dozens of aircraft, including a hydrographic survey ship, to search the region and has requested assistance from Singapore and Australia, both of which have submarine...