De-bordering and Re-bordering the European Union After the Russian Invasion of Ukraine

This article seeks to grasp the current dynamic of the European Union's enlargement policy as shaped by the exogenous shock of the Russian full-scale military invasion of Ukraine. It argues that external pressures matter as windows of opportunity, but the precise nature of the EU's response to this geopolitical push is shaped by internal factors. Building on a recent work by Frank Schimmelfennig (2021), it further argues that the new enlargement dynamic can be usefully illuminated by the concept of bordering. More concretely, this research highlights external de-bordering and re-bordering strategies pursued by the relevant political actors within the EU, as they purposefully seek to use the geopolitical window of opportunity to transform existing bordering constellations in line with their preferences. Empirically, this article sheds light on Europe's border-based games while drawing an analytical line between de-bordering and re-bordering strategies. The analysis reveals the limits of de-bordering, even under geopolitical and security emergency, but also underlines opportunities for agency.