Two waterways. One global supply chain. And right now, both are choking. The Strait of Hormuz: Iran's front door to the Gulf is functioning at a fraction of its capacity. And 2,000 kilometres away, the Houthis have just forced open a second front, at Bab-al-Mandab. Together, these two chokepoints carry a massive share of the world's oil. And right now, both are under pressure from missiles, from militias, and from Tehran's own hand on the tap. Here's how a double blockade is turning into a global energy crisis.