Summary: Hybrid CoE is an international hub for practitioners and experts, assisting participating states and institutions in understanding and defending against hybrid threats.
At stake: Hybrid CoE is, appropriately, a hybrid entity. It was originally mooted by the EU but is – currently – unusual in straddling EU and NATO fences.
What they say: “To be a neutral facilitator between the EU and NATO through strategic discussions and exercises” – second function of Hybrid CoE.
Exposure: The UK is and presumably will remain a member.
Action: None immediately: the US and Canada are also participants. The UK though ought to encourage more diversion of European External Action Services (EEAS) institutional ambitions away from creating EU-only bodies towards NATO-compatible ones. However, this may often be opposed by non-NATO member states.