The US move to blockade Iranian ports and choke off shipping through the Strait of Hormuz has shattered the Middle East’s decades-old energy equilibrium and triggered a rare rebuke from Saudi Arabia, which is now pressuring Donald Trump to reverse course. Riyadh is worried that Tehran’s retaliation could extend beyond Hormuz and close the Bab al-Mandeb chokepoint - a critical exit for Saudi oil routed through the Red Sea - jeopardising global oil flows and Gulf export routes, according to reports.