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Reign

Zahir Khan was proclaimed king (shah) on 8 November 1933 at the age of 19, after the assassination of his father Mohammad Nadir Shah. After his ascension to the throne he was given the regnal title, "He who puts his trust in God, follower of the firm religion of Islam". For the first 20 years, he did not effectively rule, instead ceding power to his paternal uncles, Mohammad Hashim Khan and Shah Mahmud Khan, who both served as Prime Ministers. This period fostered a growth in Afghanistan's relations with the international community as during 1934, Afghanistan joined the League of Nations while also receiving formal recognition from the United States. By the end of the 1930s, agreements on foreign assistance and trade had been reached with many countries, most notably with the Axis powers of Germany, Italy, and Japan.

Zahir Shah provided aid, weapons, and Afghan fighters to the Uighur and Kirghiz Muslim rebels who had established the First East Turkestan Republic. The aid was not capable of saving the First East Turkestan Republic, as the Afghan, Uighur, and Kirghiz forces were defeated in 1934 by the Kuomintang Chinese Muslim New 36th Division of the National Revolutionary Army, commanded by General Ma Zhancang at the Battle of Kashgar and Battle of Yarkand. All the Afghan volunteers were killed by the Chinese Muslim troops, who then abolished the First East Turkestan Republic, and reestablished Chinese government control over the area.

Despite close relations to the Axis powers, Zahir Shah and his governments refused to take sides during World War II and Afghanistan remained one of the few countries in the world to remain neutral. From 1944 to 1947, Afghanistan experienced a series of revolts by various tribes. After the end of World War II, Zahir Shah recognised the need for the modernisation of Afghanistan and recruited a number of foreign advisers to assist with the process. During this period Afghanistan's first modern university was founded. During his reign a number of potential advances and reforms were derailed as a result of factionalism and political infighting. He also requested financial aid from both the United States and the Soviet Union, and Afghanistan was one of few countries in the world to receive aid from both Cold War adversaries. In a 1969 interview, Zahir Shah said that he is "not a capitalist. But I also don't want socialism. I don't want socialism that would bring about the kind of situation in Czechoslovakia. I don't want us to become the servants of Russia or China or the servant of any other place."

He was considered a relatively lenient leader compared to previous kings; Zahir Shah had never signed a warrant for the execution of anyone for political reasons during his reign. He also used his power several times to commute capital punishment sentences given to some convicted criminals. At Zahir Shah's behest the new 1964 Constitution of Afghanistan was introduced which made Afghanistan a modern democratic state by introducing free elections, a parliament, civil and political rights, women's rights, and universal suffrage.

At least five Afghani Pul coins during his reign bore the Arabic title:المتوكل على الله محمد ظاهر شاه, "AlMutawakkil 'ala Allah Muhammad Zhahir Shah" which means "The leaner on God, Muhammad Zhahir Shah". The title "AlMutawakkil 'ala Allah", "The leaner on God" is taken from Quran 8:61.

By the time he returned to Afghanistan in 2002, Zahir Shah's rule was characterized as a lengthy era of peace.