European stocks give back gains in the final trading hours as concerns over the details of the agreement take center stage again.

European stock markets are giving back gains, with most major stock indices likely to close lower. Investors are studying the details of the US-EU tariff agreement. The initial optimism towards the agreement has given way to questions about unresolved issues, the impact on European economic growth, and doubts about whether governments will resist the agreement. Analyst Martin Wahlberg from Generali Investments said, "This agreement will not permanently solve the conflict."