The Belarusian railway workers who helped thwart Russia’s attack on Kyiv

"Starting in the earliest days of the invasion in February, a clandestine network of railway workers, hackers and dissident security forces went into action to disable or disrupt the railway links connecting Russia to Ukraine through Belarus, wreaking havoc on Russian supply lines."
https://www.washingtonpost.com/world/2022/04/23/ukraine-belarus-railway-saboteurs-russia/