Crown Prince Mohammed bin Salman did not call on the number of Field Marshal Asim Munir of Pakistan as the Houthis swept down Yemen's Red Sea coast and took control of the port of Mocha, then Mayyun Island in the middle of Bab el-Mandeb strait, before finally, the Greater and Lesser Hanish islands, to consolidate control of one of the world's busiest oil corridors. He dialed the number of Donald Trump. In two separate incidents on the same day, Axios reports.

Trump rejected this, and instead provided him with intelligence, not American gunfire. More telling was what was to follow: Riyadh, which had signed a mutual defence pact with Islamabad and Ankara just five weeks before, found its message from Islamabad, via the United States Central Command, to Israel's intelligence service while, secretly, Pakistan told Riyadh it would defend Saudi soil but would not deploy a single soldier into Yemen.

The photo is a contrast. On August 31, the Mecca Pact was signed with great ceremony in Istanbul, stating that anything that happened to Saudi Arabia or Pakistan was a severe blow to both countries. At the time it was widely read as a message particularly directed at Israel and as a protection against Iran's ambitions for nuclear weapons, with Riyadh being rumoured to have backed Islamabad's weapons programme.

The pact has not been used in any operational capacity since the Houthis began firing missiles and drones on Saudi cities like Abha, Khamis Mushait and Najran, wounding over seventy people in the kingdom and the Iranian-launched drones that have forced the closure of an East-West pipeline in the country. Pakistan has set a red line for the battle to be fought on its soil in Yemen, arguing that its economy is fragile and its western border with Afghanistan is not yet secure enough to allow it to get itself enmeshed in a sectarian conflict on Iran's doorstep. Similarly, Turkey has been playing it safe, with a preference for diplomacy against Tehran over commitment to troops.

The vacuum has been filled by Israel, a nation that Saudi Arabia has not officially recognised. Under the CENTCOM-brokered Saudi-Israeli deal, intelligence talks centered around plotting Houthi military locations and determining potential targets for future strikes, according to Israeli outlets Walla and Israel Hayom, as well as the Jerusalem Post. Britain separately has agreed to provide military advisors to assist Riyadh in combating the Houthi advance and bolstering its oil infrastructure under the effects of the skirmishing, Bloomberg reported.

None of this is an official alliance and the Saudi authorities keep repeating that normalisation with Israel is subject to a viable track towards Palestinian statehood. But the fact that Riyadh even considered security partnership with Jerusalem at the same time it was testing its defence pact with a nuclear armed Muslim ally, tells more about the limits of paper alliances than any communique could.

The price of economic urgency is explained in the economic stakes. In a typical year, about eight percent of trade of oil and refined products moves through Bab el-Mandeb, and in some days this month that's more than a third less, says ship-tracking firm Kpler. According to Windward tracking data, four water tankers with a combined capacity of 3.8 million barrels of crude, gasoil and naphtha were turned back mid-ocean.

In a statement to the press, Houthis' spokesperson, Yahya Saree has made it clear that the blockade is about Saudi shipping and not the others. This is happening on the heels of the US-Iran conflict that has already strained the Strait of Hormuz since February, which had been at its capacity since then to transport a fifth of the world's oil. Saudi Arabia's two primary export routes are being used simultaneously, and the East-West pipeline which normally provides a route around the key West Saudi transportation hub of Abqaiq is also currently shut down after a drone attack last week, leaving Riyadh with virtually no redundancy.

The risk is reflected in markets. Brent crude settled at about $108 a barrel this week, the highest level in four months, rising more than twenty percent since the beginning of September and over sixty percent year over year. WTI breaches $105. Goldman Sachs commodity strategists now see a realistic risk that the price of Brent will rise to $120 if the fighting between the Saudi government and its Houthi rivals escalates further, while war-risk insurance premiums, shipping-company share prices and tanker charter rates have all ticked up.

These diversions around the Cape of Good Hope are the contingency plans if trading conditions in the Red Sea deteriorate, and, if taken, they increase the freight costs by a significant amount, which eventuality, ultimately, will affect the refiners, importers and consumers outside the Red Sea. A vital trade route for India, which imports much of its energy supplies and exports to Europe via this strait, is closely monitored by the Indian government.

It really reveals the difference between the structures of the Middle East security pacts and their functionality. But those alliances which formed for deterrence and photo opportunities do not translate into expeditionary commitments when the missiles begin to fly. They reprice risk the moment a chokepoint wobbles, as do energy markets, which do not wait for that conversion to take place, unlike foreign ministries.

Saudi Arabia's approach to Israel might actually be short-term and tactical, rather than a deep-seated strategic change. Yet it has proved something more lasting: For its own oil wealth and territorial security were under real threat, Riyadh was prepared to adopt operational pragmatism instead of the concept of ideological loyalty; it was willing to look for capability, not solidarity. The Mecca Pact is alive in Pakistan only on paper.