While the EU sanctions regime on Russian targets
has proved to be resilient and stable, having survived unaltered for as many as five years, it
currently finds itself in a state of stagnation. While member states have sustained the measures
that were adopted in 2014, they are unprepared to escalate them. This reticence is observable in the
differences between EU and US responses to the most recent crises. Washington has been upgrading its
sanctions measures gradually since the spring of 2018, most recently in reaction to the poisoning of
two British citizens of Russian origin in Salisbury, interference in US domestic politics via
cyberattacks, the Azov Sea incidents and Russian military actions in Syria. Despite Washington's
habitual pressure on the EU to follow suit, Brussels has so far refrained from replicating any of
these bans. Instead, it has moved to adopt horizontal sanctions, i.e. thematic blacklists designed
to include individuals and entities responsible for breaching a specific norm. The first horizontal
list concerns the use of chemical weapons. Shortly after its adoption in 2018, it saw the
designation of the Salisbury suspects, alongside a Syrian laboratory and some scientist who had
already been listed under the EU sanctions regime on Syria.