President Donald Trump on Thursday threatened to impose a massive tariff on European alcohol in response to the European Union’s retaliation against his steel and aluminum tariffs – a tit-for-tat escalation of a trade war that could easily get out of hand.

Trump slammed the European Union as “one of the most hostile and abusive taxing and tariffing authorities in the World.”

Willamette Valley Vineyards founder Jim Bernau said uncertainty caused by Trump’s tariffs is making consumers spend less and has destabilized the U.S. wine industry.