Plurilateral initiatives are again gaining importance in climate diplomacy as a complement to multilateral efforts – not least in view of the lack of progress in implementing the Paris Agreement and more difficult conditions in the UN process. New alliances are expected to facilitate agreement...

Since 2010, amid a series of overlapping crises, the EU has introduced far-reaching instruments both within and beyond the EU treaties that have expanded its responsibilities. These instruments often have a structure-defining character and/or have served as precedents in subsequent crises. An...