U.S. President Donald Trump said on Tuesday he intends to impose auto tariffs "in the neighborhood of 25%" and similar duties on semiconductors and pharmaceutical imports, the latest in a series of measures threatening to upend international trade.

We start week five of the Trump administration with the president having threatened five sets of wildly destructive tariffs (Colombia, China, Canada and Mexico, steel and aluminium and so-called “reciprocal”) and deferred all but one to some time in the next couple of months.