The exercise to strengthen the Indian Navy has begun amid tension on the border with China. The deal is struck by establishing military relations between the Indian and US defence forces. Under the Rs 3,800-crore deal, the Indian Navy will equip warships with calibre guns, increasing the naval strength even more than before. India has issued a letter of request to the US government to purchase 11 medium calibre guns of 127 mm. These guns are to be mounted on large warships of the Indian Navy. Government sources said that according to the new plan, a letter of request (LOR)