Greenline Front (GLF) is an international network which originated in Eastern Europe, with chapters in a variety of countries such as Argentina, Belarus, Chile, Germany, Italy, Poland, Russia, Serbia, Spain and Switzerland. Operating as a loose network, GLF is held together by a shared ideological programme as well as a common ‘branding’.
https://www.radicalrightanalysis.com/2020/06/25/eco-fascism-proper-the-curious-case-of-greenline-front/
https://hopenothate.org.uk/research-old/state-of-hate-2018/violence/recruiting-for-ukraine/