China and Russia have expanded trade and defense ties over the past decade, but they’re not formal allies. Experts say Russia’s war in Ukraine could be a turning point in the relationship.

The alliance is bolstering its military deterrent in Europe amid Russia’s invasion of Ukraine and has expanded to include Finland and Sweden.

The sprawling U.S. water system is central to the nation’s economy, but chronic underinvestment, increasing demand, and the consequences of climate change have revealed the system’s weaknesses.  

Modern vice presidents can trace much of their political influence to the broad reforms that Jimmy Carter and Walter Mondale made to the second-highest elected office in the late 1970s.

Conceived as the principal defenders of the 1979 revolution, the Islamic Revolutionary Guard Corps has evolved into an institution with vast political, economic, and military power.

The National Guard is a special part of the U.S. military that answers to both state governors and the president. While it began as a “strategic reserve,” the guard has come to play an important role…

Many UN agencies, programs, and missions receive crucial funding from the United States. The Trump administration sharply reduced funding to some UN agencies, but President Biden has largely reversed…

Artificial intelligence breakthroughs promise unprecedented opportunity but also economic, political, and social disruption. Experts say AI needs oversight to ensure the changes it engenders are for …

Opioid addiction has become one of the United States’ biggest killers, endangering public health, the economy, and national security. But closing the floodgates on fentanyl poses a significant foreig…

Beijing has tightened its grip on Hong Kong in recent years, dimming hopes that the financial center will ever become a full democracy.