U.S. President Donald Trump on Tuesday ordered a probe into potential new tariffs on all U.S. critical minerals imports, a major escalation in his dispute with global trade partners and an attempt to directly rebuke industry leader China.

President Trump said Sunday he would be announcing the tariff rate on imported semiconductors over the next week, adding that there would be flexibility with some companies in the sector. The president’s pledge means that the exclusion of smartphones and computers from his reciprocal tariffs on China likely will be short-lived as Trump looks to reset trade in the semiconductor sector.

U.S. President Donald Trump has announced that new tariffs on imported semiconductors will be revealed in the coming week. The announcement comes after a series of policy shifts, with some exceptions for electronics like smartphones and computers,