New delhi, Sept. 10 -- Sri Lankan President Anura Kumara Dissanayake on Wednesday assured India, during a meeting with defence minister Rajnath Singh, that Colombo would never allow its territory to be used for activities inimical to India's security interests, as the two sides signed three agreements to boost defence cooperation, including one to modernise India-supplied air-defence guns operated by the Sri Lankan Air Force. New Delhi has long had misgivings about mega infrastructure projects undertaken in neighbouring countries with loans from Chinese state-run banks, given the experience with Sri Lanka's Hambantota port, which was handed over to Chinese control under a 99-year lease in 2017 after Colombo couldn't pay off related debts. A total of 15,000 acres around the port were also handed over along with the facility. "The two sides exchanged MoUs on upgrading L70 guns for the Sri Lankan Air Force, and cooperation between the National Cadet Corps and National Defence Colleges of both countries," the Indian defence ministry said.P4...