Researchers have been warning about future water scarcity for decades, but new data reveals a majority of the world’s largest aquifers are already running out of water.

When the leaders of the G7 countries – Canada, France, Germany, Italy, Japan, the United Kingdom, and the United States – met earlier this month, they agreed to make fossil fuels a thing of the past by 2100. At the same time the G7 is also taking steps to make climate change’s connection to conflict a priority in the present.

With thousands of scientists representing 195 countries working for more than a quarter of a century, the Intergovernmental Panel on Climate Change (IPCC) is the world’s leading authority on of assessing climate change and its potential socio-economic impacts. However, Marc Levy, an IPCC lead author and deputy director of Columbia University’s Center for International Earth Science Information Network, says he’d have gone further in connecting climate change to conflict in their latest report if it were up to him.

Millions of people across the Middle East face drought, scarce drinking water supplies, and poor sanitation due to civil wars and conflict. Meanwhile, resource constraints and foreign military interventions risk more severe humanitarian disasters.

One of the primary ways climate change is expected to affect international relations is through water. There are more than 270 bodies of water that cross over international boundaries, and various methodologies have identified several dozen that are particularly at risk for tension or conflict. So how is climate change affecting transboundary water politics? Are governments and institutions taking the threat seriously? A few years back, a group of researchers decided to focus on this question.

In 1968, Stanford University biologist Paul Ehrlich predicted hundreds of millions would starve to death over the next decade, many of them Americans, and the world would generally decline into chaos in his book The Population Bomb.

In a commencement speech at the U.S. Coast Guard Academy today, President Obama said “climate change constitutes a serious threat to global security, an immediate risk to our national security, and, make no mistake, it will impact how our military defends our country.”

Among the few bright spots in the 2015 Freedom in the World Report, the brightest may be Tunisia, which for the first time was assessed as “free” – Freedom House’s highest “freedom status” and for many political scientists the definitive indication of a liberal democracy. Tunisia is the only North African state to have been assessed as free since Freedom House began its worldwide assessment of political rights and civil liberties in 1972, and only the second Arab-majority state since Lebanon was rated free from 1974 to 1976.