Along the ancient corridors of global commerce — the narrow straits where oil and ambition have always converged — the United States and United Kingdom are tightening a coordinated grip on Iranian power. Washington has moved to ground every Iranian aircraft through financial suffocation, while London has stepped into a military support role that Washington quietly declined, extending fuel lines to Saudi jets fighting Iranian-backed forces. What unfolds is not merely a regional dispute but a contest over who controls the arteries through which the modern world breathes.