Turkmenistan holds the fourth-largest natural gas reserves in the world, yet remains one of the most closed-off countries on Earth. While nations like China have secured major energy deals, the United States has little presence or influence in this resource-rich region. Strict government control, limited access, and isolationist policies keep most of the world at a distance despite the country’s massive energy potential. It’s a rare case where enormous wealth exists — but global access is tightly restricted...