For the last two decades, climate talks, and their top-down multinational approaches, have largely failed to curb rising temperatures. Since then, a number of subnational actors (provinces, cities, businesses, and civil society organizations, among others) have sought to tackle climate change from the bottom up. For example, at a summit in New York last year, various subnational associations pledged to take action to reduce greenhouse gas emissions. Around 75 mayors from around the world, recognizing that cities account for some 70 percent of all greenhouse gas emissions, signed a Mayors Compact to accelerate ongoing efforts to shrink their carbon footprint. And major civil society organizations and businesses also signed various pledges on a range of initiatives, from expanding energy efficiency to halting deforestation.

These initiatives are promising, but they will not do enough. According to at least one study, the subnational initiatives agreed to at last year’s summit have the potential to reduce emissions by only a fifth of the required reduction needed to keep global warming under two degrees Celsius—a threshold that if exceeded, may trigger fiercer storms and increased droughts. Subnational progress is limited because ground-up climate diplomacy has largely operated on an independent track from international diplomacy. The risk with these parallel approaches is that ground-up goals will not be incorporated into top-down ones, which risks marginalizing their efficacy.

Unlocking the potential of subnational climate action will require integration of subnational and international initiatives. And the two entities that can bridge that gap are California and Germany—two of the world’s pioneers when it comes to climate policies.

Dennis Tänzler, adelphi

Several climate security studies have assessed the risks of climate change to security and examined potential foreign policy responses, but the connection between climate change and foreign policy remains underexplored. The new Climate Diplomacy Report of the German Foreign Office takes up the challenge.

Water
Sub-Saharan Africa
Meressa K. Dessu, Dawit Yohannes and Roba D. Sharamo , ISS Today

Egypt, Ethiopia and Sudan are currently engaged in vital talks over the dispute relating to the filling and operation of the Grand Ethiopian Renaissance Dam on the Nile River. While non-African actors are increasingly present in the negotiations, the African Union (AU) is playing a marginal role.

Climate Change
Security
Sub-Saharan Africa
Global Issues
Bastien Alex, IRIS

Climate change was more central than ever at this year’s Munich Security Conference (MSC), the leading international forum for senior military, security and foreign policy leaders. The release of the inaugural “World Climate and Security Report 2020” (WCSR 2020) by the Expert Group of the International Military Council on Climate and Security (IMCCS) should help policymakers take effective action.  

Land & Food
Security
Global Issues
adelphi

The mission of the Munich Security Conference is to “address the world’s most pressing security concerns”. These days, that means climate security: climate change is the ultimate threat multiplier, and anyone discussing food security, political instability, migration, or competition over resources should be aware of the climate change pressures that are so often at the root of security problems.