This week, newly minted Secretary of Defense James Mattis joined a long list of senior U.S. military leaders who have warned about the national security threats of climate change.

The intelligence community’s landmark Global Water Security assessment in 2012, warned of major water-driven challenges to U.S. national security. The combined assessment of several intelligence agencies foresaw many challenges to U.S. policy objectives and national security arising from protracted drought, declining water quality, and more natural disasters in countries important to U.S. interests. The intelligence community further warned of rising social instability, cross-border tensions, and a steady drain of resources away from other development objectives. These warnings have proven prescient.

As the 1990s drew to a close, there was a sense that much of the momentum gained at the first Earth Summit on sustainable development, a positive, affirming environmental narrative, was waning.

In recent months, the Indus Waters Treaty (IWT) has been in the headlines – and for all the wrong reasons.

As climate change threatens the stability of ecosystems around the world, the preservation of forests is seen as a “win-win” solution to curbing planet-warming emissions while producing value for developing country economies.

“Turbulent and possibly revolutionary times are ahead for U.S. energy and environmental policy,” said Bobby Magill, a senior science writer at Climate Central, at the Wilson Center on February 3. “If there’s one message the Trump Administration is sending about environmental and climate regulations, it’s this: The future will not look like the past.”

It’s often assumed that in the modern era, food security is an achievable goal. But between 2007 and 2008, a confluence of conditions shook the international food system to its core, fueling unrest and riots in more than 40 nations around the world. What’s more, this “perfect storm” may have been only a harbinger of challenges to come, according to a new report by Emmy Simmons of the Center for Strategic and International Studies (CSIS).