Anthropic says it blocked possible efforts to use AI for biological weapons development, Iran-linked cases  Fox BusinessDetecting and countering misuse of AI: September 2026  AnthropicYemeni militants used Anthropic AI to try to build ballistic missiles  Financial TimesAnthropic Says It Blocked Possible Efforts to Build Biological Weapons  The New York TimesAnthropic disrupts Russian, Chinese AI campaigns targeting its Claude models  reuters.com