Tit-for-tat trade moves have unsettled global markets. Pic/AFP

US President Donald Trump yesterday ramped up his trade war rhetoric with China, seeking $100 billion in additional tariffs on Chinese products. This is in addition to the proposed 25 per cent import tariffs worth $50 billion on some 1,300 Chinese products being imported into the US. On April 3, the US Trade Representative (USTR) had announced the 25 per cent tariffs on imports from China as an initial means to obtain the elimination of policies and practices identified in its investigation.