European stocks fell Monday as fresh trade uncertainty from U.S. tariffs weighed on investor sentiment. German stocks dropped 0.6% while France and the UK saw smaller declines, reflecting caution ahead of the European Central Bank's confidence survey. The retreat follows Trump's weekend announcement of new global tariffs after the Supreme Court struck down most previous levies, creating policy whiplash that ECB chief Lagarde warned could disrupt markets. Confidence had been rising on positive data, pushing indices to record highs, but the tariff volatility now clouds the outlook. German Ifo business climate data is due soon, expected to show further improvement, though the trade uncertainty casts a shadow over near-term gains. Nvidia's earnings later this week could provide a key market catalyst, alongside other European corporate results.