ISLAMABAD - US Ambassador Richard Olson called on PML President Senator Chaudhry Shujaat Hussain and discussed matters of mutual interests including US-Pak relations, Afghanistan and the current volatile situation in some Muslim states. During an hour long meeting at Ch Shujat Hussain’s residence in Islamabad party’s Secretary General Senator Mushahid Hussain Sayed was also present while the US Ambassador was accompanied by the new US Political Counsel Rick Waters.