As a response to the Russian aggression against Ukraine, the European Union (EU), through the notion of "digital sovereignty", imposed sanctions on organizations and individuals affiliated with the Russian Federation that prohibit broadcasting content, including online distribution. In this paper, we interrogate the implementation of these sanctions and interpret them as a means to translate the union of states' governmental edicts into effective technical countermeasures. Through longitudinal traffic analysis, we construct an understanding of how ISPs in different EU countries attempted to enforce these sanctions, and compare these implementations to similar measures in other western countries. We find a wide variation of blocking coverage, both internationally and within individual member states. We draw the conclusion that digital sovereignty through sanctions in the EU has a concrete but distinctly limited impact on information flows.

翻译：作为对俄罗斯侵略乌克兰的回应，欧盟（EU）借助"数字主权"概念，对与俄罗斯联邦相关的组织和个人实施制裁，禁止其传播包括在线分发在内的广播内容。本文深入探究这些制裁的实施过程，并将其解读为将国家联盟的政府法令转化为有效技术手段的方式。通过纵向流量分析，我们构建了欧盟不同国家互联网服务提供商（ISP）如何尝试执行这些制裁的理解，并将这些实施情况与其他西方国家的类似措施进行比较。我们发现，无论是在国际层面还是单个成员国境内，阻断覆盖范围均存在显著差异。我们得出结论：欧盟通过制裁实现的数字主权对信息流动产生了具体但极为有限的影响。