Wilson Center Director, President, and CEO Jane Harman and WWF President and CEO Carter Roberts put their weight behind growing momentum to ensure water stays on the radar for U.S. foreign policymakers in one of last month’s most-read stories.

“Even as shifting political dynamics reshape our overseas engagements, ensuring sustainable provision of water around the globe should remain a central focus of U.S. domestic and foreign policy,” they wrote in a joint op-ed. “Our collective security depends on it.”

Harman and Roberts are the latest in a chorus of voices supporting the first U.S. Global Water Strategy, a report that the Senator Paul Simon Water for the World Act of 2014 requires the president to submit by October of this year.

The China Environment Forum, meanwhile, took the top two slots. Molly Bradtke interviewed two Al Jazeera investigative filmmakers about their deep dive into the rhino horn trade, and Hongqiao Liu reported on efforts to make China’s rare earths industry cleaner and more profitable.

1. Inside ‘The Poachers Pipeline’: Q&A With Al Jazeera’s Jeremy Young and Kevin Hirten, Molly Bradtke

2. As China Adjusts for “True Cost” of Rare Earths, What Does It Mean for Decarbonization?, Hongqiao Liu

3. Midwives’ Voices, Midwives’ Realities: Results From the First Global Midwifery Survey, Nancy Chong

4. Mattis Latest in Succession of Senior Military Leaders to Warn About Climate Change, Schuyler Null

5. Advancing U.S. Prosperity and Security in a Thirsty World, Jane Harman and Carter Roberts

6. Changing the Narrative on Fertility Decline in Africa, Eunice Mueni

7. Afghanistan’s Water Plans Complicated by Worried Neighbors, Elizabeth B. Hessami

8. Ocean Fish Stocks on “Verge of Collapse,” Says IRIN Report, Azua (Zizhan) Luo

9. 15 Years of Environmental Peacemaking: Overcoming Challenges and Identifying Opportunities for Cooperation, Sreya Panuganti

10. Can We Save the World’s Remaining Forests? A Look at ‘Why REDD Will Fail,’ Bethany N. Bella