  On the 21st of February 2022, Russia recognised the Donetsk People's Republic
and the Luhansk People's Republic, three days before launching an invasion of
Ukraine. Since then, an active debate has taken place on social media, mixing
organic discussions with coordinated information campaigns. The scale of this
discourse, alongside the role that information warfare has played in the
invasion, make it vital to better understand this ecosystem. We therefore
present a study of pro-Ukrainian vs. pro-Russian discourse through the lens of
Twitter. We do so from two perspectives: (i) the content that is shared; and
(ii) the users who participate in the sharing. We first explore the scale and
nature of conversations, including analysis of hashtags, toxicity and media
sharing. We then study the users who drive this, highlighting a significant
presence of new users and bots.
