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