Burst water mains. Evacuated hospitals. In a closed-door simulation, insurers played out their response to a mass disruption by China’s Volt Typhoon hackers—and found a nightmare scenario.

Ukraine is engaged in a campaign in Crimea to take out Russian air defenses, sever vital supply lines, and cripple the ...

At least 27 people were killed in drone and missile strikes on Kyiv that damaged several residential buildings across the ...