Dost Mohammad Khan in the context of "Mohammadzai"

Afghanistan, officially the Islamic Emirate of Afghanistan, is a landlocked country located at the crossroads of Central and South 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 capital and largest city. Afghanistan's population is estimated to be between 40 and 50 million.

Human habitation in Afghanistan dates to the Middle Paleolithic era. Popularly referred to as the graveyard of empires, the land has witnessed numerous military campaigns, including those by the Persians, Alexander the Great, the Maurya Empire, Arab Muslims, the Mongols, the British, the Soviet Union, and a US-led coalition. Afghanistan also served as the source from which the Greco-Bactrians and the Mughals, among others, rose to form major empires. Because of the various conquests and periods in both the Iranian and Indian cultural spheres, the area was a center for Zoroastrianism, Buddhism, Hinduism, and later Islam. The modern state of Afghanistan began with the Durrani Afghan Empire in the 18th century, although Dost Mohammad Khan is sometimes considered to be the founder of the first modern Afghan state. Afghanistan became a buffer state in the Great Game between the British Empire and the Russian Empire. From India, the British attempted to subjugate Afghanistan but were repelled in the First Anglo-Afghan War; the Second Anglo-Afghan War saw a British victory. Following the Third Anglo-Afghan War in 1919, Afghanistan became free of foreign political hegemony, and emerged as the independent Kingdom of Afghanistan in 1926. This monarchy lasted almost half a century, until Zahir Shah was overthrown in 1973, following which the Republic of Afghanistan was established.

The First Anglo-Afghan War (Pashto: د افغان او انگرېز لومړی جنگ; Persian: جنگ اول افغان و انگلیس) was fought between the British Empire and the Emirate of Kabul from 1838 to 1842. The British initially successfully invaded the country taking sides in a succession dispute between emir Dost Mohammad Khan (Barakzai) and former King Shah Shujah (Durrani), whom they reinstalled upon occupying Kabul in August 1839. The main British Indian force occupied Kabul and endured harsh winters. The force and its camp followers were almost completely massacred during its 1842 retreat from Kabul.

The British then sent what was widely termed an "Army of Retribution" to Kabul to avenge the destruction of the previous forces. After recovering prisoners, they left Afghanistan by the end of the year. Dost Mohammed returned from exile in India to resume his rule.

The Second Anglo-Afghan War (Pashto: د افغان او انگرېز دويم جنگ; Persian: جنگ دوم افغان و انگلیس) was a military conflict fought between the British Raj and the Emirate of Afghanistan from 1878 to 1880, when the latter was ruled by Sher Ali Khan of the Barakzai dynasty, the son of former Emir Dost Mohammad Khan. The war was part of the Great Game between the British and Russian empires.

The war was split into two campaigns – the first began in November 1878 with the British invasion of Afghanistan from India. Sher Ali Khan opted to leave Kabul in order to seek political and military aid from the Russian Empire, and died in Mazar-e Sharif trying to reach the Russian border, leaving the throne to his son Mohammad Yaqub Khan. Ali's successor Yaqub immediately sued for peace and the Treaty of Gandamak was then signed on 26 May 1879. The British sent an envoy and mission led by Sir Louis Cavagnari to Kabul, but on 3 September this mission was massacred and the conflict was reignited by Ayub Khan which led to the abdication of his brother Yaqub.

The 1842 retreat from Kabul was the retreat of the British and East India Company forces from Kabul during the First Anglo-Afghan War. An uprising in Kabul forced the then-commander, Major-General William Elphinstone, to fall back to the British garrison at Jalalabad. In early January 1842, as the army and its numerous dependants and camp followers began their march, they came under attack from Afghan tribesmen. Many in the column died of exposure, frostbite or starvation, or were killed during the fighting.

At the beginning of the conflict, British and East India Company forces had defeated the forces of Afghan Emir Dost Mohammad Barakzai and in 1839 occupied Kabul, restoring the former ruler, Shah Shujah Durrani, as emir. However a deteriorating situation made their position more and more precarious, until an uprising in Kabul forced Maj. Gen. Elphinstone to withdraw. To this end he negotiated an agreement with Wazir Akbar Khan, one of the sons of Dost Mohammad Barakzai, by which Elphinstone’s army was to be guaranteed security as they fell back to the Jalalabad garrison, more than 140 kilometres (90 mi) away.

The Barakzai dynasty, also known as the Muhammadzai dynasty ("the ruling sub-clan of the Barakzai"), ruled what is now Afghanistan from 1823 to 1978, when the monarchy ended de jure under Musahiban Mohammad Zahir Shah and de facto under his cousin Mohammad Daoud Khan. The Barakzai dynasty was established by Dost Mohammad Khan after the Durrani Empire of Ahmad Shah Durrani was removed from power. The Muhammadzai era was known for its progressivist modernity, practice of Sufism, peaceful security and neutrality, in which Afghanistan was referred to as the "Switzerland of Asia".

Sultan Mohammad Khan Barakzai, (1795 – 1861) also known as Ghazi Sardar Sultan Mohammad Talaei, through his epithet as the Golden Sultan, was an Afghan chief minister and regent. He was a powerful half-brother of Dost Mohammad Khan, the eventual ruler of Afghanistan who seized control of Kabul from him. Prior to and during the reign of Dost Mohammad Khan, Sultan Mohammad Khan Telai was chief minister and governor of various regions of Afghanistan, including Kabul, Peshawar and Kohat. He was the first of the Musahiban, a Mohammadzai dynasty that began with him and ruled Afghanistan for more than 150 years, in various forms such as emir, king or president from 1823 to 1978.

An ethnic Pashtun, Mohammad Khan Talaei was the 15th son of Sardar Payeida Khan (chief of the Barakzai tribe), who was killed in 1799 by Zaman Shah Durrani. Sultan Muhammad Khan's grandfather was Hajji Jamal Khan.

The Battle of Nowshera was fought at Nowshera, in March 1823 between the Peshawar sardars led by the Afghan governor of Peshawar Azim Khan Barakzai and supported by the Yusufzai, Afridi and Khattak tribes, and the Sikh armies led by Maharaja Ranjit Singh. Azim Khan was a half-brother of Dost Mohammad Khan, the future ruler of Kabul, and later Afghanistan. The battle was a victory for the Sikhs over Azim Khan's armies, and allowed the Sikhs to begin their occupation of the Peshawar Valley.

Following their victory, the Sikhs destroyed the Afghan royal court and the fort of Bala Hissar, Peshawar. However, Hari Singh Nalwa, commander-in-chief of the Sikh army, soon commenced the reconstruction of the fort.

Sardar Mohammad Azim Khan Barakzai (Pashto, Persian: محمد عظیم خان) was the a Durrani Afghan governor of Kashmir (1812–1819). He was the second son of the Barakzai chief Payinda Sarfaraz Khan, while his elder brother Fateh Khan was the kingmaker and Vizier to Mahmud Shah Durrani. He was one of 21 brothers from eight mothers including his half-brother Dost Mohammad Khan who would later become Emir of Afghanistan.

The Principality of Kandahar (Persian: شاهزاده نشین قندهار) was a state that existed in Kandahar from 1818 to 1855. It was ruled by the Dil brothers, members of the Barakzai dynasty, as a confederation. In 1855 the principality was conquered by the Kabul-based half-brother of the Kandahari Dil brothers, Dost Mohammad Khan.