It's interesting that everyone considers Spain's opinion such a big deal. When it comes down to it Spain would find itself in a serious diplomatic crisis if it were to try and stand alone against Scotland taking it's place in the EU. I've no concerns about an independent Scotland being kept out of the EU at all. With the separate Brexit deal however although Spain is voicing it's opinion it's irrelevant. The British Government would block any attempt to get a deal tailored to Scotland's needs and Sturgeon has come out and pretty admitted that is the case. However it was important that she went to Europe, made links with EU politicians, capitalised on the justified anger felt towards Britain, and demonstrated to Scotland the nature of the Union and how Westminster has a colonial, controlling attitude toward Scotland. It's clear, that approach and attitude toward Scotland is not one of partnership but as if Scotland is nothing more than a glorified region of England. It might not happen over night but theres more damage being done there to an already damaged Union. It would seem that England is a nation unwilling to be part of a multi-national union like the EU, but also within the UK it has to have total control and get it's own way. England is a nation, rightly or wrongly, that isn't prepared to make the compromises needed to work in partnership with other peoples, which makes the Union unsustainable going forward. So while may have been a successful imperial power able to assert it's will in the past in the present there can't be a nation more unsuited to being in union with smaller nations. The idea that England could cope with a federal UK again seems like a nonsense despite Scottish Labour's insistence it's an option.