Enemy collaboration in occupied Ukraine evokes painful memories in Europe – and the response risks a rush to vigilante justice
- Written by Ronald Niezen, Professor of Practice in Sociology and Political Science/International Relations, University of San Diego

Collaboration with the enemy is a common and often painful part of armed conflict. It is also an issue in which I have both a professional and personal interest.
The war in Ukraine is, in many ways, a transparent conflict, with cellphone images, drone cameras and...