The U.S. found out this year that China could use its chokehold on rare-earth minerals as a coercive tool when Beijing imposed export controls. For Japan, it was déjà vu: It had been the victim 15 years earlier. Tokyo vowed in 2010 to be ready for next time and over the years put hundreds of millions of dollars into Australian supplies. Yet as of last year, it was still relying on China for some 70% of its imports of rare earths, which are widely used in electronics, cars and weapons, according to the government-owned Japan Organization for Metals and Energy Security. When China restricted rare-earth exports in ... (full story)