Red Army invasion of Azerbaijan

The Red Army invasion of Azerbaijan, also known as the Sovietization or Soviet invasion of Azerbaijan, took place in April 1920. It was a military campaign conducted by the 11th Army of Soviet Russia with the aim of installing a new Soviet government in the Azerbaijan Democratic Republic. This invasion occurred simultaneously with an anti-government insurrection organized by local Azerbaijani Bolsheviks in the capital city of Baku. As a result of the invasion, the Azerbaijan Democratic Republic was dissolved, and the Azerbaijan Soviet Socialist Republic was established.

Background
In early January 1920, Moscow issued an order to dissolve all national organizations in Azerbaijan and merge them into the local Communist party. The newly formed Azerbaijan Communist Party (AzCP) aimed to unite all ethnicities in the region, eliminating divisions between Muslims and Turks. Consequently, the Himmat party was disbanded; its members did not object. The Constituent Congress of the AzCP had a majority of Muslim participants, with Himmat representatives equaling those of the Russian Communist Party (30 members). Additionally, 30 members came from Adalat, and the remaining 60 represented various Communist cells, most of which were affiliated with Himmat.

In early January 1920, Georgy Chicherin, the Commissar of Foreign Affairs of Soviet Russia, send a note to Prime Minister Fatali Khan Khoyski. In the note, Chicherin called for an alliance against General Denikin, the leader of the White movement, with the intention of drawing the Azerbaijan Democratic Republic into the Russian Civil War. The Allied Supreme Court responded to Soviet pressure by providing military assistance to Azerbaijan. Khoyski, expecting timely support from the Allies, rejected Chicherin's initial demand.

In a second note, Chicherin attacked the Azerbaijani government for refusing to join the Russian army against a common enemy. Khoyski's response in early February emphasized the need for Azerbaijan to be recognized as a sovereign and independent nation before further negotiations. Chicherin, in his subsequent note, dismissed Khoyski's requests for acknowledging Azerbaijan's independence, viewing Khoyski's demands as a rejection of Soviet proposals.

During this time, the AzCP witnessed a growing number of followers, with membership reaching 4,000 individuals by late April 1920. Many advocated for Azerbaijan to surrender to Soviet Russia as the only way to save the republic. Notably, Mammad Hasan Hajinski, the interior minister at the time, strongly supported this idea. Even after being reassigned to a less central position in the cabinet of ministers, Hajinski continued pro-Russian economic activities, including selling oil to the Soviets.

On 23 March 1920, Armenians in Karabakh and Yerevan began protesting. The Azerbaijani government responded by deploying a significant portion of its army to the region, leaving Baku and the northern territories with limited protection. Meanwhile, the Bolshevik Eleventh Army was advancing through the North Caucasus, including Dagestan, and approaching the borders of Azerbaijan.

By early 1920, Soviet Russia had been in dire need of oil supplies from Baku. Vladimir Lenin, on 17 March 1920, sent the following telegraph to the Revolutionary Military Council on the Caucasus Front:

Subsequently, Sergo Ordzhonikidze, along with his deputy Sergey Kirov, were tasked with military actions aimed at conquering the territory under the auspices of the Caucasian Bureau; Alexander Serebrovsky was appointed the oversee the Baku oil fields. In a state of confusion, Khoyski sent a note to Chicherin on 15 April, demanding an explanation for the approaching Bolshevik troops. Chicherin did not respond.

The political landscape in Azerbaijan had also been shifting. Members of the Himmat party, who were aligned with the Mensheviks, joined the Communist Party, while the Ittihad party experienced a decline in membership in favor of the AzCP. Ussubakov's government, which lost support from Ittihad due to members defecting to communism, resigned on 1 April. Exploiting the situation, Hajinski formed a new cabinet. He engaged in continuous negotiations with Halil Pasha, who regarded him as a friend of Turkey. Together with the AzCP, they drafted a resolution asserting that a Red Army invasion was unnecessary, as the Turkish Communist Party and the AzCP planned to organize an internal coup. They also obtained confirmation from the 11th Army that it would refrain from intervening for a 24-hour period.

Military operation
On 21 April 1920, Tukhachevsky issued the following directive for the 11th Red Army and the Volga-Caspian military flotilla to initiate an offensive towards Baku:The day after, Hajinski announced his failure to form a new cabinet. On 24 April, the Bolshevik army commenced mobilization, occupying government buildings and imposing martial law in Baku. Operations continued on 25 April, with all Communist party committee members facing the threat of immediate death if they failed to comply with orders. At midnight on 27 April, the Azerbaijani government learned that Russian troops were entering the country from the north. With most military forces deployed to Karabakh, only a small portion of the army remained available to confront them. General Aliagha Shikhlinski was unable to take military action to halt the Russian advance towards Baku. On 28 April 1920, the Baku Revolutionary Committee officially requested aid from the Soviet Russian Government. However, the day before, on 27 April, the 11th Red Army, comprising the 26th, 28th, and 32nd rifle divisions and the 2nd mounted corps (consisting of over 30,000 soldiers), had already invaded Azerbaijan's territory.

On the same day, the Russian Communist Party, Azerbaijan Communist Party, and the Caucasian Regional Committee established the Azerbaijani Revolutionary Committee, which proclaimed itself the sole lawful authority in the country. Nariman Narimanov was designated as the head of the Azerbaijani Revolutionary Committee, alongside members such as Mirza Davud Huseynov, Ghazanfar Musabakov, Hamid Sultanov, Dadash Buniatzada, Alimov, and Ali Heydar Garayev. With the founding of AzRevKom, Sultanov promptly presented an ultimatum to the Parliament: surrender, transfer its powers, and dissolve within 12 hours.

Parliament complied, and handed authority to the Communist Party under the following conditions: "1. Full independence of Azerbaijan under Soviet power will be maintained.

2. The government formed by the Communist Party of Azerbaijan will have provisional authority.

3. The final system of government in Azerbaijan will be determined without any outside pressure, by the supreme legislative organ of Azerbaijan, the Soviet of Azerbaijani Workers, Peasants, and Soldiers.

4. All functionaries of the governmental agencies will retain their posts and only persons holding positions of responsibility will be replaced.

5. The newly formed provisional Communist government guarantees the life and property of the members of the present government and parliament.

6. It will take measures to prevent the entry of the Red Army under battle conditions.

7. The new government will resist, using strong measures and all the means at its disposal, all outside forces, from whatever quarter, aiming at the suppression of Azerbaijani independence."

The Azerbaijan Democratic Republic ceased to exist on 28 April 1920, when it was occupied. The invasion of Azerbaijan had both economic and political motivations. The primary reason for the occupation was the country's oil resources, which would enable the Soviets to fulfill their territorial expansion plans.

According to Russian historian A.B. Shirokorad, the Soviet invasion of Azerbaijan followed the Bolshevik strategy of having a local revolutionary committee incite worker riots and then seek assistance from the Red Army. This strategy would be employed again during the Soviet invasions of Hungary in 1956 and Czechoslovakia in 1968.