“As an analyst of what’s happening in Ukraine at the moment, I’m getting 95 percent of my information from Twitter,” says Ed Arnold, research fellow in European security at the Royal United Services Institute for Defence and Security Studies (RUSI). “Before that, 90 percent of your information would come from official sources, like intelligence sources.” But among the flurry of tweets, Arnold has noticed a strange trend: A significant chunk of the videos being shared are emblazoned with the TikTok watermark. “It’s odd,” he says. But it makes sense. TikTok is ubiquitous, user-friendly, and a lot of younger people use it, says Arnold.