* US military depends on samarium instead of neodymium magnets due to it's high heat tolerance.
  * For example samarium rare-earth magnets motors are used to control the fins of Tomahawk cruise missiles.
  * Due to tariff war, China cut off some rare-earth exports including samarium
  * Contractors got creative with sourcing about 100 tons of samarium from France and processing in Europe and United States
  * Future sources of samarium need to be discovered