Saudi Arabia's crown prince flew to Cairo this week looking for support from Egypt as Yemen's Houthi rebels escalate attacks on Red Sea shipping and Saudi infrastructure — a crisis with ripple effects well beyond the Gulf, including for anyone travelling or shipping through the region.

Crown Prince Mohammed bin Salman met President Abdel-Fattah el-Sissi, and both sides issued statements pledging to protect freedom of navigation in the Red Sea and the Bab el-Mandeb Strait, the narrow choke point linking the Red Sea to the open ocean and on to Asia. Neither gave concrete commitments. Analysts say Egypt is unlikely to send troops; its value is political, rallying Arab backing while keeping channels open to Iran and its allies.

The backdrop is dramatic. In recent days Houthi forces seized the Red Sea port of Mokha and three islands in or near Bab el-Mandeb, strengthening their ability to threaten Saudi oil exports bound for Asian markets. Worse for the kingdom, a strike — reportedly by Iranian-aligned militias in Iraq — damaged the East-West Pipeline, which regional officials say will be largely shut for weeks of repairs, potentially removing several million barrels of oil a day from the market and pushing global prices up.

Saudi Arabia finds itself fairly isolated. The US under President Trump has been reluctant to widen an unpopular, stalemated conflict before congressional elections, and the UAE — once a key coalition partner — has pulled out after disputes with Saudi-backed factions. The original 2015 coalition has long since frayed. Riyadh now faces a choice between a bigger military response and a diplomatic track, each with obvious risks.

The human cost is severe. The World Health Organization says fighting between Houthis and Saudi-backed forces killed more than 500 people in a single recent week and displaced nearly 94,000. Save the Children reports at least 117 civilians killed between 1 August and 9 September, including 19 children, and the deadliest week for children in a year. Saudi strikes were reported to have killed three people, among them two children, in Taiz province — a claim the Associated Press could not verify.

There's also an economic squeeze on Egypt itself. Houthi attacks on Red Sea shipping during the Gaza war cut Suez Canal traffic and revenues, and Egypt had been receiving redirected Saudi oil through the Suez or its own Red Sea–Mediterranean pipeline — flows the pipeline shutdown will largely end for now.

For travellers, the takeaway is simple: the Red Sea corridor — a route millions of cruises, transits and regional itineraries rely on — is once again a live conflict zone. Expect higher fuel surcharges and airfares as oil prices climb, and check advisory levels before booking anything touching Yemeni waters, the southern Red Sea or Saudi border regions.