edinburgh britain struggle chart way european union boost case scottish independence first minister nicola sturgeon say sunday shy away commit date another referendum vote scotland reject independence 10 percentage point margin 2014 vote poll indicate support shift significantly since consider independence referendum time clarity face sturgeon say speak scottish national party snp begin three-day conference glasgow people watch chaos engulf uk right people look ahead see damage likely do unfold disaster brexit incompetent chaotic approach brexit preside conservative prime minister theresa may tell bbc think case scotland future scotland hand ... become great strong day sturgeon head devolve scottish government saw party lose one third seat britain june election mistime push another vote secession subsequently put plan hold brexit put union uk four nations strain scotland northern ireland vote remain wales large england vote leave britain main party fight new relationship need bloc 40 years share trade politics may see authority conservatives erode since june snap election lose parliamentary majority mean britain still choice shape future trade relations sturgeon argue believe strongly ideological reason hard practical reason would act monumental folly uk come single market scottish independence case help `` brexit chaos `` sturgeon