edinburgh scotland brexit minister believe pretty strong chance britain leave european union deal uk government could collapse michael russell say devolve pro-independence scottish administration try prepare brexit despite scots vote possible outcomes legion think chance brexit happen without agreement still pretty strong crash russell head scottish brexit talk uk government tell reuters also distinctly possible ... government fall another election another government come add british prime minister theresa may run minority conservative government keep power northern irish protestant party russel say unclear new government might start negotiations afresh mandate negotiate russell say describe frustration process uncertainty britain vote leave eu divide main party new relationship want trade bloc 40 years share tie also strain tie uk four nations scotland northern ireland vote keep eu membership wales most-populous england vote leave key issue set-up power devolve beyond london parliament brexit need fluid eu immigration edinburgh scottish nationalist administration loggerheads conservative uk government london early wednesday britain first secretary state damian green say britain believe deal unlikely ready contingency plan case recently tuesday uk brexit minister david davis say britain ready walk away deal leave without deal look whether democratic legitimacy would confirm would britain parliament accept leave without deal think unlikely present composition say russell whose formal title minister uk negotiations scotland place europe russell describe brexit existential threat scotland future say government prepare extent could options regard brexit reason argue scotland offer new choice might include independence uk reject scottish voters 2014 10 percentage point margin clear brexit mean stage people scotland ask whether want stay something completely disastrous produce good result doubt whether something else say june general election russell scottish national party suffer heavy losses albeit high level force withdraw offer new independence referendum result strong chance brexit deal uk government may collapse scottish minister