With the demise of New START creating a dangerous legal vacuum, Washington and Moscow must abandon outdated Cold War assumptions and forge a modern, shared definition of strategic stability.

Climate hushing” is one reason why so many politicians who oppose Trump administration policies have been going silent on ...

Professor of public policy at the University of Maryland and former environmental and security lead in the White House Office of Science and Technology Policy ...

Americans are now getting more of their electricity from solar than from coal—a whopping big change from the early 2000s, when coal was king. And solar’s rise is accelerating, provides more than twice ...

In 1963, John F. Kennedy proved that informal, one-sided moves could successfully defuse tensions with hostile adversaries. Today, as a multipolar arms race looms, JFK's blueprint offers a vital ...

Editor’s note: This story was originally published by The Guardian. It appears here as part of the Climate Desk collaboration. Antarctica’s west coast is missing an area of winter sea ice the size of ...

Sharon Squassoni is a research professor at the Institute for International Science and Technology Policy, Elliott School of International Affairs, at the George Washington University. She has ...

Scott Sagan is the Caroline S.G. Munro Professor of Political Science, the Mimi and Peter Haas University Fellow in Undergraduate Education, Co-Director and Senior Fellow at the Center for ...