Group 1 - The core focus of the discussions between South Korean President Yoon Suk-yeol and U.S. President Trump revolves around the modernization of the U.S.-South Korea alliance and details of the trade agreement, particularly in the shipbuilding sector [1][4][6] - South Korea is the second-largest shipbuilding nation globally, following China, and has a significant advantage in terms of cost and time for constructing U.S. naval vessels compared to domestic U.S. shipyards [6][7] - The U.S. is looking to enhance its shipbuilding capabilities and has expressed interest in a large-scale shipbuilding agreement with South Korea, which includes a $150 billion fund for cooperation in the shipbuilding industry [6][7] Group 2 - The discussions also highlight the strategic importance of the shipbuilding industry as a bargaining chip for South Korea in its negotiations with the U.S., with the slogan "Make American Shipbuilding Great Again" being used to frame the partnership [5][6] - There are concerns among South Korean residents regarding the potential negative impact of increased cooperation with the U.S. on local shipbuilding investments, as more production may shift to U.S. facilities [7] - The visit includes a planned tour of a Philadelphia shipyard acquired by Hanwha, indicating a focus on expanding South Korean investments in the U.S. shipbuilding sector [8]