Ahead of trade talks in Stockholm that are set to begin today, The South China Morning Post reports that, according to sources close to the matter on both sides, the US and China are set to extend their tariff truced by another three months. China and the United States agreed in May to remove most of the heavy tariffs levied on each other's goods for 90 days while continuing trade negotiations. That suspension is set to expire on August 12. SCMP reports that one source said that, during the expected 90-day extension, the two nations will commit…