ISLAMABAD  -  Senator Bob Corker, Ranking Member of the Foreign Relations Committee of the US Senate, called on Chief of Army Staff, General Ashfaq Parvez Kayani, at the General Headquarters (GHQ) on Saturday. The two officials remained together for some time and discussed matters pertaining to prevailing security scenario in the region with particular emphasis on Pakistan’s Western border.Earlier, the US Senator had called Advisor to Prime Minister on National Security, Sartaj Aziz, to discuss a host of diplomatic issues pertaining to Pak-US relationship. The US Ambassador to Pakistan Richard Olson was also present in the meeting.