Islamabad, Shawwal 6, 1434, Aug 13, 2013, SPA -- Drone aircraft operated by the United Nations should only be used for gathering intelligence, UN Secretary General Ban Ki-moon said Tuesday on a visit to Pakistan, dpa reported. Ban, who arrived on a two-day visit, was speaking at a local university to launch the Centre for International Peace and Stability, which will provide training for peacemaking efforts. "The use of armed unmanned aerial vehicles (UAVs) should be subject to long-standing international law and also the international humanitarian laws," he said. The UN chief lauded the peacekeeping role of over 8,000 Pakistani troops involved in missions in various countries under the UN banner. "One out of every 10 troops is from Pakistan," he said. "Pakistan's engagement has been very crucial in peacekeeping missions." He is to hold talks with President Asif Ali Zardari and Prime Minister Nawaz Sharif and discuss regional and international issues. Ban will also be chief guest at the annual Independence Day celebrations on Wednesday to mark the founding of Pakistan in 1947. -- SPA 18:27 LOCAL TIME 15:27 GMT www.spa.gov.sa/1136765