First, sanctions. While it is far from clear whether the EU will currently back up the UK on sanctions ag Russia, it is equally clear that any sanctions put forward by the UK wd be far more effective if adopted at EU level /3
Current bi- and multilateral relations are embedded in joint EU & NATO membership. After #Brexit, UK will have to put much more effort into coordinating continiously with its European allies /4
EU was obviously only one among many diplomatic channels used by the UK to confront Russia.
Equally if not more important was the NATO statement and UN Security Council session /5
The US support has been growing, but Trump has yet to come out as clearly in support of the UK as Tusk, Merkel or Macron (after today’s clarification). /6
It is cutting itself off from one of the channels to its European allies. Hence, the UK, but also the EU27 will need to invest more in bilateral exchange. /7