After October 17, activities around Subcarpathian Rus' intensified. Poland proposed a partition of Subcarpathian Rus' among Hungary, Poland and Romania. Romania, a staunch ally of Czechoslovakia against Hungary, refused the proposal and even offered military support for Czechoslovakia in Subcarpathia. Hungary, in turn, attempted to persuade the Subcarpathian Rus' representatives to become part of Hungary. A common Polish-Hungarian border, which would arise by a Hungarian annexation of Subcarpathian Rus', had been a longtime dream of both Poland and Hungary, Poland was moving troops toward that frontier for support. However, since a common Polish-Hungarian frontier would mean a flanking of Germany, Germany was willing to face such a frontier only if Poland made compensation by giving up the Danzig corridor to East Prussia. Poland refused the German proposal. On October 20, the Rusyns produced a resolution more or less in favour of a plebiscite concerning the entirety of Subcarpathian Rus' becoming part of Hungary. Five days later, Subcarpathian Prime Minister Andriy Borody was placed under arrest in Prague, and Subcarpathian Foreign Minister Avhustyn Voloshyn was appointed prime minister. He was willing to consider the cession only of ethnically-Hungarian territories to Hungary and rejected the idea of a plebiscite.