European markets are poised for substantial declines following warnings from former President Donald Trump regarding potential new tariffs on the European Union. Stock futures across Europe have already begun to slide, reflecting investor concerns about the impact of a renewed tariff war. Reports indicate that both European and U.S. markets are bracing for significant downturns as the news unfolds. The Stockholm Stock Exchange, among others, has shown early signs of falling as traders react to the tariff announcements. Market analysts are closely monitoring the situation as it develops, with the potential for further volatility in global markets.