Pakistan officially the Islamic Republic of Pakistan, is a sovereign country in South Asia. With a population exceeding 180 million people, it is the sixth most populous country and with an area covering 796,095 sq. km (307,374 sq. miles), it is the 36th largest country in the world in terms of area. Located at the crossroads of the strategically important regions of South Asia, Central Asia and Western Asia, Pakistan has a 1,046-kilometer (650 mi) coastline along the Arabian Sea and the Gulf of Oman in the south and is bordered by India to the east, Afghanistan to the west and north, Iran to the southwest and China in the far northeast. It is separated from Tajikistan by Afghanistan's narrow Wakhan Corridor in the north, and also shares a marine border with Oman.
Pakistan is a federal parliamentary republic consisting of four provinces and four federal territories. It is an ethnically and linguistically diverse country, with a similar variation in its geography and wildlife. A regional and middle power, Pakistan has the seventh largest standing armed forces in the world and is also a nuclear power as well as a declared nuclear weapons state, being the only nation in the Muslim world, and the second in South Asia, to have that status. It has a semi-industrialized economy which is the 27th largest in the world in terms of purchasing power and 47th largest in terms of nominal GDP.