Can state sovereignty justify privileged receiving countries exercising authority over non‐members in a third country to safeguard their own interests? Under the current migration governance of the EU, state sovereignty is manifested in migrant interdiction, interception and detention policies employed to prevent unauthorized migrants from reaching the EU, and even from attempting to embark on cross‐Mediterranean journeys. While reinforcement of the Schengen region's external borders is a key aim of the EU's internal migration politics, collaboration with third countries regarding migration (...) control has, in the last decade, become a key feature of its external migration policy. In close collaboration with third countries, the EU has managed to curb the outflux of migrants from transit and sending countries. In effect, irregular migrants are prevented from exiting as well as from entering. This article explores the justifiability of such practices, by questioning commonly invoked models of justification such as the sovereignty “model”, with a special focus on partnership agreements regarding migration control between the EU and Libya. (shrink)