U.S. National Nuclear Security Administration and China worked together to remove highly enriched uranium (HEU) from Nigeria in 2018. This collaboration effectively reduces the risk of nuclear terrorism. The article highlights how “Across the globe, the IAEA and its partners have worked to swap out weapons-grade material with lightly enriched uranium, or LEU, which is enriched at less than 20 percent, and hence unusable for weapons. In all, 33 countries have now become free of HEU, including 11 countries in Africa.”