The war in Ukraine did not start on 24 February 2022. It began eight years earlier in eastern Ukraines Donbas region. In his new book, Jakob Hauter investigates the escalation of violence in the spring and summer of 2014. He demonstrates that, contrary to popular belief, the pre-2022 conflict was not a civil war. Ukraine has been fighting a Russian invasion since the armed conflicts very beginning. Hauter arrives at this conclusion based on a thorough review of the digital open source information (DOSI) available on the Internet. He argues that social science research needs theoretical and methodological innovation to operate in the abundant but murky information environment surrounding the Donbas War and other conflicts of the social media age. To address this challenge, he develops an escalation sequence model which divides the formative phase of the Donbas War into six critical junctures. He then combines the social science methodology of process tracing with DOSI analysis to investigate the causes of these critical junctures. For each juncture, Hauter assesses the available evidence of domestic causes and Russian interference, reaching the conclusion that, in most cases, there is convincing evidence that Russian involvement was the primary cause of armed escalation. This excellent, meticulously researched book is important. Not only does it provide fresh insights based on forensic analysis into the escalation of violence in Ukraines Donbas region in 2014, it breaks new methodological ground: It shows how process tracing and the use of digital open source information can be combined in a rigorous way to deal with the informational challenges associated with conflict. Russias Overlooked Invasion brings much-needed transparency to an opaque but vital subject. Ben Noble, Associate Professor of Russian Politics, UCL SSEES Most previous accounts of the war in Eastern Ukraine have not gone beyond generalities. Hauter uses open source Intelligence for a forensic analysis, breaking down the events leading to war into six critical junctures, in four of which Russia is shown to have been the primary actor. Without Russia, moreover, there would have been no necessary progression through the six phases, and a containable conflict would not have become a hot war. Andrew Wilson, Professor of Ukrainian Studies, UCL SSEES

Dr Jakob Hauter received his PhD from University College Londons (UCL) School of Slavonic and East European Studies (SSEES) in 2022. Previously, he studied International Relations and Contemporary European Studies in Dresden, Saint Petersburg, Bath, and Siena. He also worked as a Russian and Ukrainian media and current affairs analyst for the United States Mission to the United Kingdom and as a researcher for Forensic Architecture. He is the editor of the collected volume Civil War? Interstate War? Hybrid War? Dimensions and Interpretations of the Donbas Conflict in 2014-2020 (ibidem 2021) and has published papers in the Journal of Strategic Security, The Soviet and Post-Soviet Review, and Media, War & Conflict.