Here is a look at foreign policy - the Brexit orphan issue.
theguardian.com/world/2020/jun…
“The UK is an ally in Nato, but there are a few significant topics on which if there is no formal framework the co-operation will not be the same as before.”
EU can be effective in acting as a bloc - inc acting in line with UK policy/interests - see sanctions against Russia in 2014 and the response to the Salisbury poisonings, seen as a diplomatic triumph by British diplomats.
Others say EU-UK ad-hockery will be found wanting in the next big foreign policy crisis.
But for now, for the EU, UK is seen as having just walked out of the house into a hurricane and nobody understands why.