The U.S. is suddenly looking less bubbly for European wines. President Donald Trump on Thursday threatened a 200% tariff on European wine, Champagne and spirits if the European Union goes forward with a planned 50% tariff on American whiskey.

The president said he would impose the levies if the European Union did not walk back plans to place retaliatory tariffs on whiskey and other U.S. products.

The owner of one of France's top Bordeaux wine chateaux hopes U.S. President Donald Trump's threat of 200% tariffs on European wine is just posturing because the impact would be devastating if not.