Climate change is the world’s greatest environmental threat. It is also increasingly understood as a threat to domestic and international peace and security – recognized by the Department of Defense as a “threat multiplier,” by Secretary of State John Kerry as “perhaps the world’s most fearsome weapon of mass destruction,” and by President Obama, in an address to graduates of the United States Military Academy, as “a creeping national security crisis.” The Supreme Court’s temporary blocking of the Clean Power Plan highlights the Federal-State divide over how to address climate change, but because of its national security dimension, climate change also raises unique separation of powers issues between the president and Congress with regard to how the military can respond.

In November 2015, experts from a variety of fields gathered at the Peace Palace in The Hague for the Planetary Security Conference, one of the first large-scale conferences on environmental security and what is hoped to be the start of an annual series. The conference report gives a sense of the diverse discussions held in the Netherlands.

DURBAN, South Africa — Arguably the most elegant aspect of an inelegant subject is how this city of 3.2 million residents, South Africa’s second largest, is solving monumental water and waste challenges in its jammed informal settlements.

Canada is well known as a world leader in measures of human wellbeing. Since the launch of the UN Human Development Index in 1990, Canada has ranked among the top 10 countries every single year except one. But though Canadians can take a just pride in their country’s achievement on the global stage, it nevertheless masks grave concerns at home.

The ongoing violence in Syria exhibits the potential for water problems – a historic drought, in this case – to exacerbate existing social and political problems and contribute to humanitarian crises. In a recently released infographic, Circle of Blue combined data from the European Commission Joint Research Center’s Global Conflict Risk Index and the World Resources Institute’s Aqueduct Water Risk Atlas to identify 10 hotspots around the world where water “could play a role in developing or exacerbating humanitarian crises” in 2016.

Despite evidence that natural resources play a major role in many conflicts – 40 percent of all civil wars since the end of the Cold War, according to an estimate by the UN Environment Program – a study conducted by Arthur G. Blundell and Emily E. Harwell for the NGO Forest Trends reveals that most ceasefire and peace agreements do not address natural resources.