The Houthis’ biggest territorial gains in years, along the Bab el-Mandeb Strait, could boost Iran’s strategy of driving up world oil and gas prices to pressure the United States.

Yemen’s Houthi rebels march during a mobilization campaign in Sanaa, Yemen, Thursday, Sept. 10, 2026. (AP Photo)

BEIRUT (AP) — Anthropic says Claude users in northern Yemen, territory controlled by Iran-backed Houthi rebels, tried to use the AI model to develop advanced missiles.

AI is already transforming warfare from Ukraine to Gaza, and its use on a rugged and remote battlefield is likely to increase concerns about its rapid spread.

Anthropic said the users of the accounts, which it blocked after identifying them, did not succeed in “fielding an operational device” but did carry out a failed test of a guided rocket. It said it knows that because the users returned to its Claude chatbot to find out why it failed.