The Russian president's actions in Ukraine aren't in keeping with the spirit of D-Day.

Readers fret over the fate of Ukrainians—and the dangers of escalation.

The global economy is becoming more vulnerable to supply shortages and price shocks. We need to address that volatility.

On the modern battlefield, brains and adaptability yield far better results than ruthless brutality does.

Xi Jinping poses as a peacemaker but stokes disorder.

Ukrainian General Valerii Zaluzhny had the second-most-difficult job in the world. His boss has the most difficult one.

Iran’s attack on Israel is just one campaign in a much larger conflict.

What the world saw at the White House on Friday was not just a realignment of America’s foreign policy, but a clash of two incompatible styles.

Putin’s template is simple: flatten cities, install satraps, rule by fear.

Not only did the president hold up aid to Ukraine; he made its release contingent on a statement advancing his own political interests.