Once a fringe movement, green parties are increasingly shaping the debate in countries around the world. How influential are they, and what comes next?

Russian leaders have watched with mounting resentment as the transatlantic alliance has nearly doubled its membership since the end of the Cold War. President Vladimir Putin has drawn a red line in U…

For many policymakers, economic sanctions have become the tool of choice to respond to major geopolitical challenges such as terrorism and conflict.

Violence attributed to online hate speech has increased worldwide. Societies confronting the trend must deal with questions of free speech and censorship on widely used tech platforms.