[Sephiroth]

Originally Posted by 1andrew1

The only cohesive argument I can deduce from Seph's posts is that the UK was right to leave the EU as this would allow the EU can take stronger sanctions against other countries without fear of the UK blocking them, as it has done previously.

Not at all - and I'm disappointed that this is your conclusion.
I bring you back to post #901, which I elaborated my train of thought. The up front quote in that post is:

The EU itself is reflecting on how to avoid another exit and what it was about the EU that was unattractive to the UK. Barnier has very recently said as much:

I've very clearly pointed out Barnier's lament that the EU is weaker without the UK in dealing with the Russian/China threat and vice-versa. I also pointed out that Barnier was worried about further withdrawals from the EU unless it improved its act.