On the other hand, state systems are increasingly confronted with comparable, major challenges that they can no longer cope with using domestic resources only. Demographic developments, migration or the accompanying effects of climate change require cross-border solutions. For the political partners these solutions have to be flexible but also reliable. Particularly in the case of international agreements, a distinction must be made between the short, medium and long-term interests of the partners. International organisations will only be able to make a successful contribution if they take account of these new circumstances.