Saudi Arabia pushed war-ravaged Yemen to the brink of the worst famine the world has seen in decades when it closed the country’s ports on Nov. 5. Riyadh sealed all entry via land, air, and sea in retaliation to an intercepted a ballistic missile near the capital, allegedly fired by Yemeni rebels known as the Houthi. The U.N. has warned that the “catastrophic” blockade could endanger the lives of millions of aid-reliant people.