UK is indeed "close" to US. Unequal relationship where US keeps dangling free trade deal, but never delivers, no matter how many pipelines Liz Truss helps blow up. It is more of a close political relationship, rather than UK people desperate to follow every war. Musk threatening to liberate UK from liberals they voted for last, is a strain on public opinion. US using Greenland to threaten EU would lose US's shine as a beacon of freedom, as perhaps tariffs on Canada, to extort its sovereignty, do. UK would see alliance with US much as Canada realizes.