China-Japan Senkaku Islands Rare Earth Embargo (2010)
September-November 2010What Happened
After Japan detained a Chinese fishing captain near the disputed Senkaku Islands, China halted rare earth exports to Japan for approximately two months. Japan imported 90% of its rare earths from China. Prices for some rare earths spiked over 2,000%—the cost of US rare earth imports rose from $6,969 to $170,760 per metric ton by 2011.
Outcome
Japan's automotive and electronics industries faced immediate supply disruptions. The crisis triggered a global rare earth price bubble lasting through 2011.
Japan invested 100 billion yen in supply chain resilience, cutting China dependence from 90% to 60% and halving total rare earth consumption through efficiency and recycling. Lynas received $250 million in Japanese investment. The WTO ruled against China's export restrictions in 2014.
Why It's Relevant Today
The 2010 crisis demonstrated China's willingness to weaponize rare earth supply. Japan's response—diversification, efficiency improvements, recycling, and allied investment—provides a template for US strategy. The current situation is more severe: April 2025 restrictions target defense applications specifically.
