Small Country and European Security: The Case of Bulgaria-Russia Relations since 2014. Link: https://www.taylorfrancis.com/chapters/edit/10.4324/9781003082453-9/small-country-european-security-jean-crombois?context=ubx&refId=57a6a1d6-73f8-400b-a8e9-34077d93be7a
Another Missed Opportunity in the Western Balkans?