The FT has an article today that will make unwelcome reading for Scottish nationalists. Nevertheless, even though it comes from the usual suspects at the Constitution Unit, it warrants serious consideration:
The diplomatic fallout over recognition of the newcomer has ominous implications for the separatists in minority government in Edinburgh. Half a dozen European Union states fear the example that is being set for ethnic minorities within their borders. If Scotland ever votes for independence these states could easily make an example of it by blocking Scottish membership of the EU. (Simon James, Financial Times)
Of course, an independent Scotland would be in a fundamentally different position from Kosovo since it would almost certainly be applying in the wake of an agreed secession in line with international legal precedent.
James' point is that Scottish membership of the EU might nevertheless be blocked by governments obstinately determined to make a point. In reality, taking such a stance against an agreed secession, might only strengthen the hand of unilateral seccessionists.
It would in effect impose Spain's reactionary constitution on the European Union, since their would be no democratic way for national communities to pursue their aspirations, even where they are in the majority, and remain in the EU. Such an approach might repress secessionist movements in the short run, but ultimately it would make the union a dangerously rigid structure.