Emma Mateo is a postdoctoral fellow who studies political behaviour in times of crisis, such as mass protest and war, with a regional focus on eastern Europe, particularly Ukraine and Belarus. Her current monograph project explores civilian responses to conflict, focusing on the case of Ukrainian mobilisation during the Russo-Ukrainian war. Drawing upon fieldwork in Ukraine and systematic analysis of local and social media data, the project investigates the actions and motivations of ordinary Ukrainians in different local contexts who engaged in the war effort as civilians. Emma also researches subnational mobilisation during mass protest, mapping and analysing local protests Belarus and Ukraine for her doctoral research. Emma’s interest in the intersection of protest, civil society, media and technology has led her to make innovative use of social media data, such as Telegram Messenger. Her work has been published in Post-Soviet Affairs and Social Media + Society, and featured at major conferences and expert workshops in the US, Canada, UK, and EU. She has previously worked at Columbia University as a Postdoctoral Fellow at The Harriman Institute, and Adjunct Lecturer in Sociology. Emma holds a PhD in Sociology (2022) and MPhil in Russian and East European Studies (2018) from the University of Oxford, and a BA in Modern Languages (Russian, French and Ukrainian) from the University of Cambridge.