vienna austria social democrat chancellor christian kern conservative foreign minister sebastian kurz thursday reject european commission chief jean-claude juncker vision expand eastward euro border control free zone annual state european union speech juncker sketch vision post-2019 eu 30 countries would use euro eu finance minister run key budget help state trouble french german eastern european officials make positive comment speech kern run kurz parliamentary elections oct. 15 tell orf radio point expand euro schengen zone long tax fraud practice contract work lower-cost eastern european firm breach limit government debt vanquish simply make sense enlarge euro zone deal otherwise problems would get big kern say point greece struggle years verge bankruptcy prime example problems like expansion problems end day plus european cooperation think concept think kurz also point greece bad example include countries fulfil condition public finance eu set euro schengen zone open everybody fulfill criteria ... must avoid another situation like one greece kurz say austria 's leaders reject juncker 's vision euro expansion