Images that take a look at some scary (and fun) pre-Halloween festivities around the world

Why are we so sure that the Russian leader is a master strategist?

The country’s deep integration into the global economy complicates Cold War-style strategy.

Avoiding another Cold War may require Moscow to change course.

The next question is what Russia’s response will be.

Russian invaders are now treating the entirety of the Ukrainian population as combatants, as dirt to be cleansed.

Adam Tooze, a historian of economic disaster, sees a combination of worrisome signs.

The Senate deal would change the course of the 2020s, finally putting America’s climate goals in sight.