After the successful revision policy Hungary sought further solutions to the remainder of its former territories and demanded the concession of Transylvanian territory from Romania. The Axis powers were not interested in opening a new conflict in Central Europe; both countries were facing strong diplomatic pressures to avoid any military operations. Finally both parties accepted the arbitration of Germany and Italy, known as the Second Vienna Award, and as a result Northern Transylvania was assigned to Hungary. Shortly afterward, the Kingdom of Hungary joined the Axis powers. Hitler demanded that the Hungarian government follow Germany's military and racial agenda to avoid potential conflict in the future. Anti-Semitism was already an established political cause by the far right in Hungary. In 1944, after the ousting of Horthy by Hitler and before the installation of the National-Socialist Arrow Cross Party, the Hungarian government readily aided Nazi Germany in the deportation of hundreds of thousands of Jews to concentration camps during the Holocaust, where most of them died.