美国贸易代表格里尔：韩国在与美国的贸易问题上总是非常具有挑战性。我们从韩国人那里获得了重大让步。欧盟提出了向美国购买能源。将持续监控贸易协议的合规情况。

Core Viewpoint - The U.S. Trade Representative, Katherine Tai, highlighted the challenges posed by South Korea in trade negotiations, indicating that significant concessions have been made by South Korea [1] Group 1: U.S.-South Korea Trade Relations - South Korea is consistently viewed as a challenging partner in trade discussions with the United States [1] - Major concessions have been obtained from South Korea during recent negotiations [1] Group 2: U.S.-EU Energy Trade - The European Union has proposed purchasing energy from the United States [1] - Ongoing monitoring of compliance with trade agreements will be maintained [1]