The Starobilsk agreement was a 1920 political and military alliance between the Makhnovshchina, an anarchist mass movement led by Nestor Makhno's Insurgent Army, and the Ukrainian Soviet Socialist Republic, which the Bolsheviks had established as the government of Ukraine.

The agreement was reached following the resurgence of the White movement in Ukraine, which forced the warring Bolshevik and Makhnovist factions to put aside their differences and work together against their common enemy. Its political clauses extended a number of civil liberties to the previously repressed Ukrainian anarchist movement, while its military clauses subordinated the Insurgent Army to the high command of the Red Army.

The agreement was effective from October to November 1920. Following the Soviet victory over the Whites at the siege of Perekop, the Red Army attacked the Makhnovists, bringing an end to the agreement and igniting a conflict between the two factions that would last until the complete suppression of the Makhnovshchina in August 1921.

Background The Ukrainian anarchists were a historic ally of the Bolsheviks, going back to their collaboration during the October Revolution and the early months of the Ukrainian Civil War. Following the 1919 Soviet invasion of Ukraine, the Ukrainian anarchist insurgents led by Nestor Makhno integrated themselves into the Red Army, but eventually mutinied due to political and military disagreements. After defeating the White movement at the battle of Peregonovka, the Makhnovist movement rapidly expanded its influence throughout southern Ukraine. They were then attacked by the Red Army in January 1920 and fought to a stalemate over the subsequent months, while the White movement began to once again make territorial gains.

Preliminary overtures In June 1920, the secretariat of the Nabat approached the All-Ukrainian Central Executive Committee to propose an armistice with the Insurgent Army, but the offer was rebuffed. Not long after, a member of the Left Socialist-Revolutionaries from Oleksandrivsk offered to act as a mediator between the two factions, but he too was rejected by the insurgents' Military Revolutionary Council, which insisted on the Insurgent Army fighting the Whites as an independent force. Throughout the summer, offers for a ceasefire were sent by the insurgents to the Bolshevik government, but these received no response and fighting between the two factions persisted.

By August 1920, a series of defeats in the Polish–Soviet War had forced the Bolsheviks to begin peace negotiations, while Wrangel had himself launched a devastating offensive against the 13th Red Army positions in left-bank Ukraine, extending the White lines as far as Katerynoslav, Mariupol and the Don. The Insurgent Army found itself trapped between the Red and White armies, facing attacks from both, which ignited an argument within the Makhnovist leadership over whether or not to form an alliance with the Red Army. Vasyl Kurylenko and Viktor Bilash came out in support of the proposal, while Dmitry Popov and Semen Karetnyk opposed it, and Nestor Makhno himself was undecided. They resolved to call a general assembly for the Insurgent Army to itself decide, with the result being a narrow majority in favor of an alliance. While waiting for a response from the Bolsheviks, clashes between the two factions continued into September.

Agreement On 29 September, the Ukrainian Soviet government finally agreed to a truce with the insurgents, without amalgamating the two forces together, and even allowed for the release of anarchists from the Cheka's prisons. The government appointed Andriy Ivanov to head the Bolshevik delegation, which was dispatched to Starobilsk to draw up a preliminary agreement. The following day, the Military Revolutionary Council of the Insurgent Army submitted a ceasefire request to the Southern Front of the Red Army, offering their subordination to Bolshevik command and the recognition of the Ukrainian Soviet government, on the condition that they be allowed to retain their own internal structure. On 2 October, Mikhail Frunze ratified the pact, ordering an immediate end to hostilities with the Insurgent Army.

Terms

On 6 October, the provisional agreement was signed by Andri Ivanov, Semen Karetnyk, Dmitry Popov and Viktor Bilash, with the armistice between the two factions entering into force the following day. They then arranged for the final draft of the political-military agreement to be drawn up in the Ukrainian Soviet capital of Kharkiv, where the insurgents would be represented by Dmitry Popov, Abram Budanov and Vasyl Kurylenko.

According to the political agreement: all anarchist political prisoners were to be released and political repression against the anarchist movement ceased; anarchists were to be extended a number of civil liberties including freedom of speech, freedom of the press and freedom of association, excluding any anti-Soviet agitation; and anarchists were to be allowed to freely participate in elections to the Soviets and the upcoming Fifth All-Ukrainian Congress of Soviets. This was signed by the Bolshevik delegation, represented by Yakov Yakovlev, and the Insurgent delegation, represented by Dmitry Popov and Vasyl Kurylenko.

According to the military agreement: the Insurgent Army was to subject itself to the Red Army's high command, while retaining its internal structure and autonomy; the Insurgent Army pledged not to accept any units or deserters from the Red Army into its ranks; the Insurgent Army was obliged to inform its followers of the agreement and request the cessation of all hostilities against the Soviet government; and the families of Insurgent Army combatants were to receive the same benefits as the families of Red Army soldiers. This was signed by the commanders of the Red Army's Southern Front, represented by Mikhail Frunze, Béla Kun and Sergey Gusev, and the Insurgent delegation, represented by Dmitry Popov and Vasyl Kurylenko.

Reactions

On 9 October, Vladimir Lenin spoke in favour of the alliance, believing that the Makhnovists would not want to repeat their conflict with the Bolsheviks after experiencing Wrangel's occupation. On 10 October, Trotsky published an article in which he questioned the alliance, calling on the Makhnovists to oust any kulaks and bandits from its ranks, and to recognise the Soviet government. On 13 October, Makhno reaffirmed in an editorial that the insurgent movement did not recognise the authority of the Ukrainian SSR and refused political collaboration with the Bolsheviks, considering the pact to be a wholly military endeavor.

On 15 October, the final draft of the agreement was signed, although the insurgent delegates remained in Kharkiv to resolve the fourth clause of the political pact, which had been disputed by the Bolshevik delegation. This fourth clause would have extended full autonomy to the Makhnovshchina, allowing them to establish institutions of workers' self-management and self-government in south-eastern Ukraine, under a federative agreement with the Ukrainian SSR. The Bolsheviks feared this would limit their access to the Ukrainian rail network and turn the Makhnovshchina into a "magnet for all dissidents and refugees from Bolshevik-held territory." While the Ukrainian Bolsheviks themselves were amenable to the idea, their delegates claimed that the clause needed approval from Moscow and quietly dropped the subject.

The All-Ukrainian Central Executive Committee initially prevented the publication of the agreement, as they wanted to ensure the movement of Makhnovist troops to the front first. But after the Makhnovists threatened to halt the implementation of the agreement until its publication, an abridged version of the text was published, omitting the fourth political clause. The Bolsheviks were particularly keen on publicising the military clause on the extension of welfare, as they believed it would incentivise the insurgents to uphold the agreement.

Despite the earlier hostilities, the insurgents acceded to the Bolshevik overtures, justifying the pact as a necessity due to the fight against Wrangel. The insurgents were also unaware of the peace negotiations in Riga, which had already enforced an armistice between the Polish and Soviet forces, and underestimated the Red Army's capacity on the Southern Front. The insurgents still hoped to win over the populace and considered themselves strong enough to militarily resist the Red Army, once the time for it came.

The outcomes of the pact were immediate, seeing the release of the insurgent commanders Petro Havrylenko and Oleksiy Chubenko, as well as the leading anarchist intellectual Volin, from the prisons of the Cheka. Wounded Makhnovists, including Makhno himself, were also treated by the Red Army's medical corps. The Ukrainian government declared an official amnesty on 4 November, allowing the Nabat newspaper to resume publication and giving space for a planned anarchist congress to take place in Kharkiv towards the end of November.

The pact had significantly treated the Makhnovists and Bolsheviks as equal partners, despite the former's concession of military subordination to the latter, with the insurgents hoping that success against the Whites would oblige the Bolsheviks to allow the implementation of soviet democracy and the extension of civil liberties in Ukraine. The terms of the pact were so favorable to the insurgents that the Red Army high command began to worry whether their own troops would soon begin defecting to the Makhnovist ranks once again.

Alliance against Wrangel Northern Taurida Operation As relations once again started to soften between the Bolsheviks and Makhnovists, the insurgents were assigned their own theater, which included their home territory around Synelnykove, Oleksandrivsk, Huliaipole and Berdiansk. As part of the 4th Army, the 10,000-strong insurgent detachment forced the Whites into a retreat on 11 October. The Makhnovist advance was aided by a number of insurgents that were caught behind the White lines, some of whom had briefly formed an alliance with Wrangel during the Red Army offensive, who informed the Insurgent Army on the White positions. After days of fighting, the insurgents routed the White "Drozdov Division" and recaptured Huliaipole, taking 4,000 prisoners of war in the process. During this time, the 2nd Cavalry Army broke through the White lines at the Kakhivka bridgehead, opening space for an insurgent offensive towards Melitopol, in hopes of cutting off the White route of retreat.

The Makhnovists requested three days of rest in Huliaipole but were ordered to continue their offensive, under threat of their alliance with the Red Army being nullified. An insurgent expeditionary force, commanded by Semen Karetnyk with Petro Havrylenko as chief of staff, immediately set out from Huliaipole and captured Oleksandrivsk on 23 October. Frunze ordered them to continue advancing, expecting them to reach the isthmus of Perekop before the end of the month. The Red forces themselves were advancing relatively slowly and failed to complete their planned encirclement of Wrangel's army. On 28 October, the Red Army finally reached the front against the Whites, with the 6th Army and 1st and 2nd Cavalry Armies taking the left flank along the Dnieper, while the 4th and 13th Armies took the right flank from Oleksandrivsk to the Azov Sea.

The following day, Karetnyk's detachment went on to capture Tokmak, where they took 200 prisoners and seized 4 artillery cannons and machine-guns. They then continued on through Melitopol all the way to the Syvash, forcing the Whites to retreat from mainland Ukraine to Crimea.