Islamabad, Sept. 16 -- When two nuclear-armed countries fight a conventional war, there is every possibility that it could escalate into a nuclear war and impact the entire world, Pakistan Prime Minister Imran Khan said, ratcheting up the rhetoric in the wake of spiralling tensions between New Delhi and Islamabad following India's move to withdraw special status to Jammu and Kashmir. "So that's why we have approached the United Nations, we are approaching every international forum, that they must act right now," he said in an interview with Al Jazeera....