The Nabat Confederation of Anarchist Organizations, better known simply as the Nabat (Набат; Alarm), was a Ukrainian anarchist organization that came to prominence during the Ukrainian War of Independence. The organization, based in Kharkiv, had branches in all of Ukraine's major cities. Its constitution was designed to be appealing to each of the different anarchist schools of thought.
The Nabat worked closely with the Makhnovist movement, often taking leading roles within the movement's institutions. But conflicts between the political leadership of the Nabat and the military leadership of the Revolutionary Insurgent Army led to a rupture between the two, before they were both suppressed by the Bolsheviks in November 1920.
In exile, former members of the Nabat became involved in providing prisoner support for their members still in Soviet prisons. They were also embroiled in debates over what to learn from their experiences, with one faction led by Peter Arshinov advocating for platformism, and the other led by Volin advocating for synthesis anarchism.
Following the outbreak of the February Revolution, a number of Russian and Ukrainian anarchists returned from exile to the country. The anarcho-syndicalist Volin arrived in Petrograd and began lecturing about the need for anarchist unity against the rise of Bolshevism. Aron Baron, along with his wife Fanya, moved to Kyiv, where they participated in the local Soviet. Following the Bolshevik occupation of Kharkiv during the October Revolution, Fanya and Aron moved to the city, where they helped to launch the Ukrainian anarchist movement. Meanwhile, Peter Arshinov had been released from Butyrka prison and moved to Katerynoslav, joining the anarchist movement in Donbas and giving lectures to the region's miners and factory workers.
As the new Russian government became increasingly hostile, many anarchists decided to leave Russia and move to Ukraine, where they could enjoy greater freedom and put their ideas into practice.