The British government has announced the start of the project Nightfall to develop a new deep-strike ballistic missile to help Ukraine in the war against Russia. The Nightfall project is a competition to rapidly develop a ground-launched ballistic missile.

At least two people were killed in one of Russia’s biggest aerial assaults on Kyiv during its more than four-year war with Ukraine, officials said Sunday.

Sophisticated air defenses can shoot down the Russian ballistic missiles—but these are few and far between, and busy intercepting hundreds of other projectiles as well. On Wednesday night, Russia unleashed a massive air attack against Kyiv, launching ...