Fortunately it isn't in Ms Sturgeon's gift to call a referendum on the break up of the United Kingdom that power only exists at Westminster, and Scotland as part of the United Kingdom in any UK wide Referendum on EU Membership must abide by the vote of the majority vote of the electorate of the entire United Kingdom (I know that that is not a concept or a reality that the SNP can live with - nevertheless we do live in a democracy and that might eventually sink in).