Top U.S. and Chinese officials were meeting in London on Monday to try to defuse a high-stakes trade dispute that has widened beyond tit-for-tat tariffs to restrictions over rare earths, threatening to cripple supply chains and slow global growth.

High-level delegations from the United States and China are meeting in London to try and shore up a fragile truce in a trade dispute that has roiled the global economy

U.S.-China trade talks in London this week are expected to take up a series of disputes that have buffeted relations.