Diplomacy between cities, counties, states and regions is critical to ensuring that diplomatic doors between countries are left open throughout changing political cycles at the national level. Such efforts are more important now than ever, especially for the climate crisis. As we head into COP27 with the message “from ambition to implementation,” cities have a critical role to play as the venues where many of the policies discussed at international climate negotiations will play out.

This article, by Sharon Guynup, originally appeared on Mongabay.

In August, I traveled aboard the icebreaker Kinfish to the Svalbard archipelago, north of the Arctic Circle. Invited to the bridge as we cruised fjords near the 80^th parallel, I was transfixed by towering blue glacier walls, but was confused by the map displayed on one of the ship’s screens. It showed our vessel sailing across a non-navigable frozen sheet.

Hydropower is the largest source of low-carbon electricity in the world today. And its benefits are needed more than ever. The International Energy Agency estimates that we will need to double the amount of installed hydropower capacity—which stands today at around 1360 gigawatts worldwide—in order to limit the rise in average global temperatures to 1.5 degrees Celsius above pre-industrial levels.

The much-needed transition to a zero carbon, green economy offers opportunities to contribute to peace, but only if the conflict risks of transition are understood and managed to produce a just and peaceful transition. That means minimizing “backdraft”—the unintended negative impacts of transition that are a key obstacle to that goal.

Ever since the CNA’s Military Advisory Board—composed of former U.S. military personnel—named climate change as a “threat multiplier” in a 2007 report, the term has gained widespread currency both in environmental and national security circles. It also has propelled the need to assess and address climate-related security risks higher up overall policy agendas.

Earlier this year, the IPPC published yet another report underscoring the fact that rapid climate action is needed to limit global warming and avoid further irreversible, devasting environmental impacts. Over the next decade, the report calls for urgent, unprecedented social and economic transitions to reduce emissions and enable climate resilient development for vulnerable people.