The Shanghai Cooperation Organisation (SCO) summit is underway in the Pakistani capital of Islamabad, but top leaders from China, India and Russia are absent. India's foreign minister S Jaishankar presence's will mark the first time in nearly nine years that India's foreign minister has travelled to Pakistan. Security concerns have threatened to overshadow the event, casting doubt on how much progress the summit can achieve. Hira Mustafa reports from Islamabad.
