The Core Group Meeting 2015 was held in Vienna. The crisis in Ukraine was a central theme of the meeting, which featured the Ukrainian Foreign Minister Pavlo Klimkin and the Russian deputy Foreign Minister Alexei Meshkov. Klimkin urged the European states to confront the Russian government head-on. The Austrian Foreign Minister Sebastian Kurz stated that any border changes in Europe were "unacceptable", but at the same time stressed the need for cooperation with Russia. While the Swiss Foreign Minister Didier Burkhalter proposed a neutral status for Ukraine, the Serbian Foreign Minister Ivica Dačić as OSCE Chairman called for a strengthening of his organization in order to prevent future conflicts.