The European Commission has urged the United States to lift tariffs on Spanish black olives, following a World Trade Organization ruling that the tariffs violated WTO rules. The Commission also clarified that European black olive producers will not be compensated for losses incurred during the tariff period, as the WTO does not apply rules retroactively. The dispute arose as the US argued its dominance in the market, while Europe defended the aid to Spanish producers as part of the Common Agricultural Policy's decoupled aid, allowed by the WTO.