In the shadow of a prolonged maritime conflict, Saudi Arabia has closed a major oil pipeline — a quiet but consequential act that reveals how deeply the Houthi campaign has penetrated the architecture of global energy. For months, Iranian-backed forces have struck at the arteries of world trade threading through the Red Sea, and now one of the earth's great oil producers has concluded that the risk to its own infrastructure outweighs the cost of closure. The decision is less a dramatic escalation than a sober acknowledgment: the world's most vital shipping corridor has become a zone of sustain