[2] He fought for the self-proclaimed Donetsk People's Republic from 2014 to 2015 under the call sign Moskva during the war in Donbas.
[3] Moscow Calling was run by Kurshin anonymously and frequently espoused ultranationalist views and become one of the leading milbloggers criticising the supposed inadequacy and ineptitude of the Russian Ministry of Defence's planning, fighting, and leadership during the Russian invasion of Ukraine.
[3] Kurshin would be doxxed by his fellow milbloggers as the administrator of Moscow Calling after joking about the assassination of Vladlen Tatarsky in April 2023.
[3] On 31 August 2023, shortly after Moscow Calling made a post of a video of members of the 205th Separate Motor Rifle Brigade complaining about poor uniforms and shoddy equipment, Kurshin would be arrested at a train station.
Facing ten years in prison, Kurshin plead guilty to the charges on 1 September in a hope to get a reduced sentence.