Indian Navy’s INS Arihant submarine is pictured at the naval warehouse in the southern Indian city of Visakhapatnam, in this November 18, 2014 file photo. India is speeding up a navy modernisation programme and leaning on its neighbours to curb Chinese submarine activity in the Indian Ocean, as nations in the region become increasingly jittery over Beijing’s growing undersea prowess. To match INDIA-CHINA/NAVY REUTERS/R Narendra/Files (INDIA – Tags: MILITARY POLITICS MARITIME)