Trump invokes war powers in Yemen by October 31?

The question asks whether President Trump will invoke war powers by submitting a 48-hour War Powers Resolution report regarding U.S. forces in hostilities in Yemen or against the Houthis by October 31, 2026. The articles describe escalating Houthi actions—seizing a strategic island TIME article, taking a key Red Sea city Post article, and capturing a key port abc.net.au article—which increase the likelihood of U.S. military involvement. However, the most directly relevant article reports that Saudi Crown Prince Mohammed bin Salman sought U.S. military help from Trump against the Houthis Reuters article, indicating high-level discussions but not a decision to introduce forces into hostilities. The resolution criteria require a formal report, not just discussions or increased tensions. While the situation is volatile, there is no evidence in the articles that Trump has already decided to submit such a report, and the timeline extends to October 2026, leaving room for diplomatic or other non-military responses. The probability is below 0.5 because the articles show a serious crisis but no concrete step toward a war powers report, and the default is no action unless a report is filed. I assign 0.35, reflecting a moderate but not dominant chance, as the crisis could escalate to a formal report but is not yet certain.