Emission reductions alone are unlikely to prevent severe climate change effects. Geoengineering proposals are a way forward, but they need legitimate and effective governance.

Many issues today require unprecedented international cooperation. The proliferation of weapons of mass destruction (WMD), terrorism, cybersecurity threats, climate change, and economic imbalances be…

The use of social media and other Internet-enabled communications by the self-proclaimed Islamic State is pushing the United States and other democracies to react to the abuse of liberal freedoms by …

Overview The twentieth century saw the rise of the U.S. dollar, the German mark, and the Japanese yen as international currencies. Now the Chinese renminbi is on a similar course toward reserve cu…