Prosecutors have struggled to prove in court what the president and his aides have repeatedly said in public: that a network of leftist activists presents a serious threat to national security.

Every major escalation in the Middle East sends shock waves far beyond the region. In the United States, those shock waves arrive not as distant tremors but as catalysts for domestic radicalization ...

One of the great mysteries about the rise of populism, in both the United States and Europe, is why it has benefited the political right so much more than the left. For years, American progressives ...

The Iranian Revolution of 1979 reshaped the political landscape of the Middle East, replacing Iran’s Western-backed leader ...