Russia's invasion of Ukraine has shell-shocked the world.It has monopolized headlines 
in the print and broadcast media, unleashed a torrent of instant analysis in professional 
commentary, and flooded social media.At the same time, social media networks can help to expose
propaganda and the decentralized nature of social media creates new challenges for authorities in 
controlling narratives.Propaganda techniques and capabilities gain 
power in the new digital environment.This note considers how social media has been weaponized 
in the war effort of both sides and to what effect.