Afghanistan is a mountainous landlocked country at the crossroads of Central and South (Southern) Asia. Some of the invaders in the history of Afghanistan include the Maurya Empire, the ancient Macedonian Empire of Alexander the Great, the Rashidun Caliphate, the Mongol Empire led by Genghis Khan, the Timurid Empire of Timur, the Mughal Empire, various Persian Empires, the British Empire, the Soviet Union, and most recently the United States with a number of allies in response to the September 11 attacks. A reduced number of NATO troops remained in the country in support of the government under the U.S.–Afghanistan Strategic Partnership Agreement. Just prior to American withdrawal in 2021, the Taliban regained control of the capital Kabul and most of the country. They changed Afghanistan's official name to the Islamic Emirate of Afghanistan.

Afghanistan, officially the Islamic Emirate of Afghanistan, is a landlocked country located at the crossroads of Central Asia and South Asia. Referred to as the Heart of Asia, it is bordered by Pakistan to the east and south, Iran to the west, Turkmenistan to the northwest, Uzbekistan to the north, Tajikistan to the northeast, and China to the northeast and east. Occupying 652,864 square kilometers (252,072 sq mi) of land, the country is predominantly mountainous with plains in the north and the southwest, which are separated by the Hindu Kush mountain range. Kabul is the country's largest city and serves as its capital. According to the World Population review, as of 2023, Afghanistan's population is 43 million. The National Statistics Information Authority of Afghanistan estimated the population to be 32.9 million as of 2020.