This article uses a survey amongst students at European universities to explore whether Russia's invasion of Ukraine has affected attitudes towards European integration. Some respondents completed the survey just before Russia's assault on 24 February 2022, and some did so just afterwards, thus delivering a quasi‐experimental design situation, which we exploit. Our results suggest that the ominous news about the Russian attack increased the participants' interest in EU politics, consolidated their attachment to the EU and made them more mindful and appreciative of the benefits of deeper European integration. In effect, the war so close to the EU Eastern border provoked a rally around the supranational EU flag, with convergence of public opinion towards shared European values.