From the 2004 Indian Ocean tsunami to Superstorm Sandy, the last decade has seen an incredible array of natural disasters. Of course, disasters of all kinds are nothing new, but, thanks to the growing scale and interconnectedness of the human enterprise – and the damage we have done to the natural world – the frequency, scale, and consequences of today’s calamities are truly without precedent.

The original version of this article, by Stewart M. Patrick, appeared on the Council on Foreign Relations’ The Internationalist blog.

Not long ago, concerns about environmental degradation were marginal in U.S. national security deliberations. What a difference climate change has made. Foreign policy officials and experts are starting to recognize profound linkages between planetary health, economic prosperity, and international security. These connections were on full view last Wednesday, when the Council on Foreign Relations (CFR) teamed up with Conservation International (CI) to convene a symposium, “Global Resources, the U.S. Economy, and National Security.”

While it can be convenient to think of human health and the environment as unrelated silos, they are in fact closely related. The United Nations Environment Program (UNEP) recently released a report underscoring this point especially for Africa, where large numbers of people are directly reliant on natural resources for their livelihoods.

Friction between Japan and China in the East China Sea has escalated this year to the point where jets on both sides have been scrambled and Chinese military vessels have locked their fire control radar onto their Japanese counterparts multiple times. The source of this tension is the Senkaku (as they are known in Japan) or Diaoyu (if you’re in China) Islands – specifically, who owns them.

The 2009 Copenhagen summit was a watershed moment in the history of climate change negotiations, especially from an Indian perspective. Brazil, South Africa, India, and China – the “BASIC” group – asserted their position, which led to a virtual collapse in talks, ostensibly marking the ascent of the global “south” and relative descent of the “north.”

When Superstorm Sandy slammed into the U.S. East Coast last October, it was the latest in a series of “teachable moments” about our growing vulnerability to climate change.

India and China – “the two most important countries going forward in this century” – will both experience domestic concerns as a result of environmental change, but they are responding very differently, said Cleo Paskal, an associate fellow at Chatham House, in an interview with the Environment, Conflict, and Cooperation (ECC) Platform.

The conversation around immigration and Mexico has long been tied to the United States and the prevailing economic conditions in both countries. But a new report from the Royal United Services Institute argues that as temperatures rise and precipitation patterns change over the course of the next century, climate too will increasingly become a driver of both internal and international migration in Mexico. [Video Below]