Trust is a delicate thing. For 50 years the West has had absolute faith in the USA. Now... it has gone: we don't trust the POTUS and would he declare War and enable assets to help the UK if he wasn't invited to Harry's wedding? If he was in a Twitter War with France would he then not help in a real war? A year ago people would have said these are two completely different things but now who knows for sure? Might it be used as a negation tool or require others to publicly beg for assistance?
Up until now whatever else I've personally never thought that the USA might not be there. But of course prior to 1941 they were not. And in fact there are many times they have not assisted. So perhaps this has been a wake up that the West has become too complacent.

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