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Helen Thompson is professor of political economy at Cambridge University and a regular on the Talking Politics podcast.
The EU's dependence on Nato for security and Germany's dependence on Russia for energy has created a disjunction at the heart of the European project.
Run by politicians lacking the historical sensibility to guide it, the constitution has been hollowed out.
After a long period of economic expansion, a slowdown has begun. But in an era of high debt and low interest rates, states have little ammunition to deploy.
