Oil prices climbed for the first time in three days on Thursday, with supply worries resurfacing after U.S. President Donald Trump announced a reversal of a license given to Chevron to operate in Venezuela.

A permit issued by the United States government allowing energy giant Chevron Corp. to pump and export Venezuelan oil will be terminated this week.

The United States is rescinding a Treasury license allowing Chevron to produce and export oil from Venezuela, despite U.S. sanctions, President Donald Trump said Wednesday, because President Nicolás Maduro was not legitimately elected and has not accepted Venezuelans deported from this country fast enough.