U.S. aid is critical not just for Ukraine, but for U.S. credibility in Russia and beyond.

Policymakers face complex cost-benefit considerations when intervening in the market to mitigate perceived risks, from climate change to competition with China.

See how six countries are faring amid efforts to protect 30 percent of the planet’s land and waters by 2030, and what will be saved if they succeed. 

With India's development continuing to gain steam, one of the biggest challenges will be to avoid the mistake that others have made when they failed to recognize their newly acquired global systemic …

The dispute is complicated in ways that extend far beyond political and legal solutions.

CFR invited the presidential candidates challenging President Trump in the 2020 election to articulate their positions on twelve critical foreign policy issues. Candidates’ answers are posted exactly…