Punjab, Oct. 13 -- Riyadh's main airport remains closed after further incoming fire, days after Houthi strikes there killed people including, by one account, an American national. The Houthis have warned the United States of a "swift and painful" response if it joins Saudi Arabia's campaign against them.

The casualty figures do not agree

This needs stating plainly because the gap is large. Fox's live coverage reports at least 20 killed at the airport over the weekend, including a US national. NBC, citing officials, reports three Saudi nationals killed.

A sevenfold discrepancy in a death toll three days after an event usually means one outlet is counting an aggregate across multiple strikes and the other a single incident, or that officia...