Artikel Defence and Deterrence in Europe: Beyond Multilateralism as We Know It Multilateralism has reached its limits as a guiding principle for relations with Russia in security and defence. Germany should open up to multilateral military cooperation formats in addition to NATO to reinforce deterrence and defence on the eastern flank and to strengthen regional security. This requires an increase in defence spending and in military engagement. Justyna Gotkowska • 26 November 2020