Surging fears of terrorism, chaos in the Middle East, tensions in Asia, and the slowing Chinese economy suggest a challenging year lies ahead for global leaders, says CFR’s James M. Lindsay.

The Obama administration has other methods to pursue a binding international agreement on climate change in Paris that fall short of a treaty, says CFR’s John B. Bellinger III.

The Islamic State’s attack on Paris demonstrate that both Europe and the United States need to commit to winning the ideological war against extremism with renewed vigor, says CFR’s Farah Pandith.

Sustained diplomacy led to the Iran nuclear deal, but it’s too soon to expect broader discussions between Tehran and Washington, says expert James Dobbins.

Beyond China’s market upheaval is a country struggling with how to relax state control over the economy amid a slowdown that has global implications, writes CFR’s Robert Kahn.