“As new energy options emerge to meet global demand, nations that lead stand to gain; should the U.S. sit on the sidelines, it does so at considerable risk to our national security,” advises the latest report from CNA’s Military Advisory Board (MAB), a group of retired generals and admirals.

“There’s a lot you can do to mitigate risk once you acknowledge the risk exists,” said John Conger, senior advisor at the Center for Strategic and International Studies at a June 5th briefing on Capitol Hill. Convened by the Environmental and Energy Study Institute, Center for Climate and Security,  and the Henry M. Jackson Foundation, the panel of former Department of Defense (DOD) officials and retired military officers included Sherri Goodman, senior fellow at the Wilson Center, and three members of the Military Advisory Board: Brigadier General Gerald Galloway, General Ron Keys, and Rear Admiral Ann C. Phillips.

Terrorist groups such as the Islamic State and Boko Haram have been dominating the headlines since 2013.  Both groups have gained international notoriety for their ruthless brutality and their rise is posing new challenges for national, regional, and international security. Such non-state armed groups (NSAG) are not a new phenomenon. Today, however, we can observe an increasingly complex landscape of violent actors with a range of hybrid organizational structures and different agendas that set them apart from “traditional” non-state actors and result in new patterns of violence.

Over the last 60 years, more than two-thirds of the world’s remaining biodiversity hotspots have experienced armed conflict. The effects have been myriad, from destruction as a result of military tactics to indirect socioeconomic and political changes, like human migration and displacement. This so-called “war on wildlife” has important implications for conservation and peacebuilding efforts, according to a recent literature review published in Frontiers in Ecology and the Environment.

In a brief published by the Stanley Foundation, Cullen Hendrix explores how “the degradation and overexploitation of renewable sources…and unequal access to these resources” can make societies more or less susceptible to experiencing mass atrocities. Hendrix proposes that “demographic-environmental stress” is most likely to contribute to mass atrocities (genocide, war crimes, or crimes against humanity) in agricultural societies that have a high level of group identity-driven politics and economics, exclusionary political institutions, political actors that deprive certain groups, or when governments have low legitimacy.

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.