It might seem strange to say that the deep sea, the vast expanse of the world’s oceans beyond the continental shelf, is at risk of conflict and competition. After all, no one lives there, and as is often said, more is known about the surface of the moon than most parts of the ocean floor. But the fact is, even the cold, dark reaches of the ocean are no longer immune to resource competition between the world’s major powers.

Ten miles south of Tel Aviv, I stand on a catwalk over two concrete reservoirs the size of football fields and watch water pour into them from a massive pipe emerging from the sand. The pipe is so large I could walk through it standing upright, were it not full of Mediterranean seawater pumped from an intake a mile offshore.

The idea that climate change is causing migration and displacement is entering the mainstream, but experts have warned against using the term “climate refugees” to describe what we’re seeing in small islands, coastal regions, and even conflict zones like Syria.

Overfishing by foreign fleets in West Africa is leading to devastating social and economic consequences. In a report from the Overseas Development Institute, an independent think tank based in London, researchers use satellite data to assess the scale of two kinds of illegal, unreported, and unregulated fishing: “reefers,” or large-scale commercial vessels receiving and freezing fish at sea and at port, and large refrigerated container ships that are registered in countries with less stringent enforcement regulations than that of the ship’s owners.

The International Expert Forum (IEF) is a series of seminars meant to facilitate dialogue between experts and policymakers on peace and security. Meeting in Stockholm this past May, the forum explored the connections between environmental issues, peacebuilding, and conflict while considering how environmental governance can aid in peacebuilding. The summary brief produced after the forum provides a useful snapshot of a fast-changing field of study.

One fear of climate change is that more variable weather conditions will lead to violence and chaos in some places. But looking at it methodically, do erratic weather conditions actually lead to violent conflict and political instability? Not necessarily.

The eye catching headlines are familiar. “Water Wars” are imminent or already underway in the latest drought or dam-building hotspot. Such “wars” often extend to farmers battling over irrigation diversions, but at times countries are the players. Senior leaders are often quoted suggesting transboundary water theft constitutes a casus belli. Security officials are obliged to investigate.

2015 was a deadly year for environmental activism. According to Global Witness, 185 activists were killed, a 60 percent increase from 2014. Of the victims, 40 percent were indigenous people, like Berta Cáceres, who spoke at the Wilson Center last year and was shot and killed in her home in Honduras this March. [Video Below]