The 2005 United Nations agreement on the ‘responsibility to protect’ (R2P) populations from atrocities was intended to set acceptable boundaries to ‘humanitarian intervention’, but it is still extremely controversial and vulnerable in a world of increasing nationalism and illiberalism. Can the European Union help to ‘rescue’ R2P? This paper analyses how the EU has responded in three mass atrocity situations: Central African Republic (2012–14); the treatment of the Rohingya minority in Myanmar (2017–), and inter-ethnic…