Khyber Pakhtunkhwa ( ; ), also known as KP, is one of the four provinces of Pakistan, located in the northwestern region of the country. It was formerly known as North-West Frontier Province (NWFP), commonly called Sarhad in Urdu, which means "frontier." Its provincial capital and largest city is Peshawar, followed by Mardan. It shares borders with the Federally Administered Tribal Areas to the west; Gilgit–Baltistan to the northeast; Azad Kashmir, Islamabad and Punjab to the east and southeast. Balochistan lies to the southeast. Khyber Pakhtunkhwa also shares an international border with the Afghanistan, connected through the Khyber Pass.