China, the U.S., Russia and others have ramped up their contest over artificial-intelligence-backed weapons and military systems. The buildup has been compared to the dawn of the nuclear weapons age.

Iran Blockade Sets Up a Test of Which Side Can Endure More Pain President Trump wants to choke off Tehran’s lifeline by blocking the Strait of Hormuz. But Iran is betting his tolerance for political ...

Meta Platforms is projected to surpass Alphabet's Google in digital advertising revenue globally by the end of 2026, and dethrone the search-engine behemoth in the lucrative business, according to ...