The Rare Earths Trade Dispute was a trade dispute between China on one side and several countries led by the US on the other. The dispute was over China's export restrictions on rare earth elements, plus Tungsten and Molybdenum, which are used to make many electronics such as smartphones. China controls 97% of the production of these elements. The US, EU and Japan argued that the restrictions were a violation of the WTO trade regulations. In 2012, the Obama administration filed a case with the Dispute Settlement Body of the WTO. In 2014, the WTO ruled against China, which led China to drop the export quotas in 2015.