In late 1920, the
Persian Socialist Soviet Republic in
Rasht was preparing to march on Tehran with "a guerrilla force of 1,500
Jangalis,
Kurds,
Armenians and
Azerbaijanis", reinforced by the
Bolsheviks'
Red Army. This fact, along with various other disorders, mutinies and unrest in the country created "an acute political crisis in the capital." By 1921,
Qajar Persia had become corrupt and inefficient. The oil-rich nation was somewhat reliant on
Britain and
Russia for military and economic support. Civil wars earlier in the decade had threatened the government, and the only regular military force at the time was the
Cossack Brigade.
Ahmad Shah Qajar, the
shah of Iran at the time, had only been crowned in 1909 at the age of eleven and was considered to be a weak, incompetent ruler, especially after British, Russian, and Ottoman occupations of Persia during
World War I. In 1911, when the capital city,
Tehran, had been seized by the Russians, armed
Bakhtiari tribesmen, rather than Iranian regular troops, expelled the invaders. On 14 January 1921, the British General
Edmund Ironside chose to promote
Reza Khan, who had been leading the
Tabriz battalion, to lead the entire brigade. About a month later, under British direction, Reza Khan's 3,000-4,000 strong detachment of the Cossack Brigade reached Tehran. ==The coup and subsequent events==