BBC New / April 9, 2025 / Donald Trump's "explosive" tariffs are now in effect, including 104% on China, the world's biggest exporter. Also on the list are 60 of the "worst offending" countries - who will face tariffs ranging from 11% to 50%. The additional tariffs on China kicked in after Beijing refused to meet Trump's deadline to withdraw its own retaliatory levies on the US. Trump has said that the tariffs are vital for his economic vision, but experts warn a full scale trade war is a possibility.