The 5G revolution, American military defense, and even time itself are dependent on this one critical metal that China monopolizes and that the U.S. is desperate to get more of. The metal is Cesium, and it’s quite possible you’ve never even heard of it–yet, global dominance, which depends on technological superiority, can’t happen without it. In May 2018 Cesium was added to the list of critical minerals by the United States Department of the Interior.