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.

Adaptation & Resilience
Cities
Global Issues
Daria Ivleva, adelphi

In an increasingly urbanised world, global resilience cannot be achieved without cities. Separating a local from a national or international sustainability issue is increasingly difficult – be it climate change, migration, or economic development.

Adaptation & Resilience
Climate Change
Climate Diplomacy
Development
Security
Global Issues
Dr. Dhanasree Jayaram

Climate diplomacy needs to release itself from the shackles of ‘systemic’ politics in order to achieve a climate agenda that is driven by human security interests, including equity and justice, and strengthen climate change initiatives at local, national and regional levels, in order to bridge the gap caused by the slow pace of progress at the international level.

Dr. Dhanasree Jayaram

Leaving No One Behind is the mantra of the 2019 UN-Water campaign. Foreign policy agendas of countries should apply the principle and integrate the voices of the most marginalised into the decision-making process, argues Dhanasree Jayaram.

Climate Change
Climate Diplomacy
Security
Global Issues
Martin Wall, adelphi

With climate change increasingly being seen as a security issue, we ask what role the United Nations Security Council could and should play. To answer this question, we are joined on the Climate Diplomacy Podcast by UN expert and Chatham House Associate Fellow Oli Brown. In this podcast, Oli explains some of the challenges that the UN Security Council has had in tackling climate change and outlines the prospects for action in the future.