On November 3, Kim Tae-hyo, the head of South Korea's National Security Office, stated that if Donald Trump is elected as the president of the United States, the US-provided 'umbrella of protection' may weaken. Kim Tae-hyo attended the first Sejong Open Forum hosted by the Sejong Institute on the same day and gave a speech on 'US Presidential Election and South Korea's Diplomatic Security Strategy.' He stated that if Donald Trump is elected president, it is possible that the US will negotiate with us from a financial perspective regarding the provision of strategic assets. However, the Trump administration will still maintain the achievements and cooperative system of the trilateral summit among the US, South Korea, and Japan, such as the real-time sharing of North Korean missile warning intelligence, trilateral joint exercises, and cybersecurity cooperation. Kim Tae-hyo also stated that the election of Donald Trump would have a combination of positive and negative effects. Due to the diffusion of anxiety caused by the security situation in disputed regions, South Korea's military industry exports are expected to have more opportunities.