Pakistan renewed an agreement allowing Sikh pilgrims from India to visit one of the holiest shrines in the country. India and Pakistan are bitter rivals in many matters, but the deal demonstrates the neighbours can still work together on issues. Indian External Affairs Minister S. Jaishankar travelled to Islamabad for a meeting of the Shanghai Cooperation Organisation a week ago. It was the first visit by an Indian foreign minister in nine years. The agreement allows Sikh worshippers visa-free visits to Gurdwara Kartarpur Sahib, a shrine located near the border with India, for another five yea…