Europe must realise its superior economic and military potential has to be mobilised, writes Bill Jones,while Robin Wilson addresses Belgium’s resistance to seizing Russian assets

I wholly support the plea to Europe by Timothy Garton Ash (Only Europe can save Ukraine from Putin and Trump – but will it?, 6 December). One aspect he did not mention was the strategic nuclear balance. Since the late 1940s, responsibility for deterrence has always lain with the Pentagon and has succeeded in keeping the peace, though at times a very fragile version of it.

The recent US statement on defence makes it clear that Europe is no longer seen as a priority by the Trump administration, the danger now being that doubt is crucially being raised as to the credibility of Nato’s deterrent. Without certainty of a reaction in kind, Russia, under its ambitious and risk-taking president, might be tempted to chance its arm in what almost looks like a ceding of Europe by the US into a Russian “sphere of influence”.