The Riyadh airport attack on Saturday afternoon turned a faraway proxy war into a problem for anyone who has ever booked a flight through the Gulf. A missile hit the Saudi capital's King Khalid International Airport, witnesses described people running for the exits, and by evening President Donald Trump was telling reporters he might send American forces into the fight.

According to The Associated Press, as published by Fortune, a missile struck a complex housing the terminals used for domestic flights, and a regional official said many people were wounded. Saudi civil aviation authorities said operations at the airport had been suspended while they assessed the damage and the number of injured. Flights were diverted elsewhere, the tracker Flightradar24 said, and the United States, Britain, Germany, Australia and Canada all warned their citizens to stay away from the airport.

What witnesses saw at the terminal

The Straits Times, citing AFP reporting, quoted a witness who was waiting at a domestic gate when the strike landed. The witness said people were injured in front of them and described the scene bluntly: "Everyone was running." A hospital source told the outlet that five people were in intensive care and that dozens were hurt in total, with one relative saying a wounded family member was cut on the shoulders and arms by shattered glass.

A diplomatic source told AFP the airport was hit by a missile at around three in the afternoon local time, and called it a civilian target. Saudi authorities did not immediately confirm a new attack or an evacuation, and the Houthis did not issue a statement claiming this particular strike. That gap matters, because claims from every side in this war have been impossible to verify independently.

A week of escalating strikes

This was not the first hit on the same airport this week. On Thursday, Houthi strikes killed three Saudi citizens, including a pilot for the national carrier Saudia, and badly damaged a grounded Saudia plane. Al Jazeera reports that those deaths were the first of their kind inside the kingdom since fighting resumed.

The Houthis also warned global airlines "for the last time" about operating in Saudi airspace, which the group calls a theater for its military operations. The fallout was fast. According to the flight-tracking site FlightAware, at least two hundred and twenty-five flights at the Riyadh airport were canceled over a single day, and Air India, FlyDubai, the Lufthansa Group and Pakistan International Airlines have paused service to Riyadh and other Saudi airports for the next few days.

Europe's aviation safety agency has widened its guidance on Saudi airspace too, warning that the Houthis can now strike deeper inside the kingdom and that missile and drone interceptions raise the risk of civilian planes being misidentified.

Why Yemen is suddenly everyone's problem

Why does a regional skirmish keep reaching the Saudi capital? The answer starts with a wider view. Al Jazeera explains that Yemen's government forces, backed by Saudi Arabia, are pushing an offensive to retake Houthi-held territory, including the capital Sanaa. The most valuable prize is the Bab al-Mandeb strait, the narrow entrance to the Red Sea.

That chokepoint matters more than usual because the Strait of Hormuz has been all but shut by Iranian attacks during the US-Iran war, which began in February. Saudi Arabia has increasingly leaned on the Red Sea route to move its oil, so whoever controls the water near Mocha and Dubhab has leverage over global energy markets. The United Nations envoy for Yemen, Hans Grundberg, told the Security Council on Friday that the country has effectively slid back into "full-scale war."

The human toll is already heavy. Al Jazeera cites the UN as saying at least forty-six civilians have been killed and more than one hundred and thirty injured since August, while the International Organization for Migration says more than two hundred thousand people have been displaced since fighting escalated in September.

Will Trump send in the US military?

Asked about the Riyadh strike, Trump did not rule anything out. "We may. We're going to look at it," he said, according to the AP. "We just found out about the recent attack. So we'll make a decision. We move very quickly." Officials have told the AP that American help so far has meant intelligence sharing, target identification and planning for the offensive, not troops or direct strikes.

The AP also reports that Saudi Arabia is running low on missile interceptors and has asked France, Britain, Pakistan and Egypt for air defense support, while the US has watched its own stockpile shrink during the Iran war. Meanwhile, the Saudi and Omani foreign ministers spoke by phone about backing diplomatic solutions, though Straits Times coverage notes that neither Riyadh nor the Houthis has signaled much appetite for talks.

What to watch next

Travelers in the region are being told to check with their airline before heading anywhere, which is exactly the advice Riyadh's airport itself is giving passengers. For everyone else, the real signals are whether Washington formally joins the campaign, whether more carriers pull out of Saudi airspace, and whether the Red Sea corridor stays open for oil. One Riyadh airport attack has put all three questions on the table at once. More coverage lives in the war section as the story develops.