As global trade lines are redrawn under geopolitical pressure, Donald Trump reveals his cards. Before a meeting in Scotland with Ursula von der Leyen, the American president warns: no customs tariff lower than 15% will be granted to the European Union. This firm stance, with direct repercussions on transatlantic flows, could also impact strategic sectors such as digital and blockchain. Behind this maneuver lies an economic showdown between two opposing views of commercial sovereignty.