Group 1 - South Korea has historically maintained a "zero tariff" policy with the United States, but recently faced a 15% tariff increase on its products due to the U.S. trade war, with attempts for a 25% increase being moderated to 15% to accommodate South Korea's psychological capacity [1][3] - In response to the U.S. tariff pressure, South Korea has announced a significant investment plan of $350 billion aimed at securing tariff concessions from the U.S., indicating a compromise under duress [3][10] - The change in South Korean leadership from Yoon Suk-yeol to Lee Jae-myung has not altered the country's strategic alignment with the U.S., as evidenced by the continued commitment to U.S. interests and the recent investment proposal [5][8] Group 2 - The imposition of the 15% tariff is expected to severely impact South Korean export enterprises, particularly in the manufacturing sector, prompting the government to seek favorable treatment through additional investments [3][10] - South Korea's lack of complete sovereignty, highlighted by its military dependence on the U.S., underscores the unequal nature of the bilateral relationship, which influences its foreign policy decisions [7][8] - The investment commitment of $350 billion reflects South Korea's recognition of its limited negotiating power with the U.S., as it seeks to mitigate the adverse effects of the tariffs [10]