The two-year-old war in Ukraine—which is far from deadlocked—could pivot dramatically in the coming months. U.S. decisions will play a decisive role.

Governments and companies are embracing new emissions-reducing technologies that pull carbon dioxide out of the atmosphere. But it is uncertain whether this can work at the scale and in the time nece…

Grueling work, financial stress, and shifting values are pushing too many of the navy’s nuclear personnel out of the service. Here’s how it can turn things around.

The advanced U.S. fighter aircraft will mark a significant upgrade to Ukraine’s air force, but their impact on the war with Russia will hinge on several factors.

China and Israel have sharply ramped up trade, investment, and cultural ties in recent years, but obstacles to closer relations may yet emerge.

The latest recurrence of domestic protests in Iran stems from the country’s role in regional wars, combined with corruption and economic mismanagement. This discontent is likely to continue to pose a…