Three years since Russia’s full scale invasion of Ukraine, BBC Trending speaks to Open Source Intelligence (OSINT) analysts and fact checkers who have worked diligently throughout the war to verify online content from the front line and push back against malicious propaganda. Their efforts documenting war crimes and debunking misleading content has taken a toll - what keeps them going and how do they avoid burnout? Presenter: Olga Robinson Producers: Alex Murray & Yana Lyushnevska Editor: Flora Carmichael

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