With US-Iran trust broken again, can Pakistan bring them back to talks?

Islamabad, Pakistan – A wooden panelled bookshelf behind him, Pakistani Prime Minister Shehbaz Sharif signed the memorandum of understanding (MoU) between the United States and Iran, aimed at extending their ceasefire by creating a pathway towards long-term peace.

Sharif then held up the document for the cameras. That was June 17, the high point of a frenzied diplomatic effort l...