Group 1: Trade Agreement Outcomes - The unexpected trade agreement reached during the summit includes a total investment plan of $350 billion from South Korea to the U.S., with $200 billion in cash investments and $150 billion allocated for shipbuilding cooperation under the "Make American Shipbuilding Great Again" initiative [3][4] - The agreement stipulates a reduction in automotive tariffs from 25% to 15%, aligning with the rates negotiated by Japan and the U.S. Other categories such as pharmaceuticals and wooden products will receive most-favored-nation treatment, while certain materials will be subject to zero tariffs [3][4] - Semiconductor tariffs will be set at a level not lower than that of Taiwan to ensure the competitiveness of South Korean companies [3][4] Group 2: Defense and Security Cooperation - The summit resulted in a new consensus on defense and security, with South Korea planning to enhance its defense capabilities through increased defense budgets and the development of its defense industry [4] - South Korea aims to initiate a nuclear-powered submarine project to improve maritime deterrence and strategic mobility, which was acknowledged by President Trump, who agreed to establish follow-up consultation mechanisms [4] - The strategic cooperation will focus on nuclear submarine propulsion systems, shipbuilding industries, and defense equipment [4] Group 3: Diplomatic Context and Reactions - The summit was marked by a high level of hospitality, with South Korea welcoming President Trump with a 21-gun salute and a special gold tie presented to him by President Yoon Suk-yeol, symbolizing the "golden future" of the Korea-U.S. alliance [5][6] - Despite the celebratory atmosphere, there were protests nearby, indicating some domestic dissent regarding the summit and its outcomes [6] - The timing of North Korea's missile test was interpreted by experts as a strategic move, coinciding with the summit, while also leaving room for future dialogue despite rejecting Trump's meeting proposal [7][8]