Former US President Trump shared a column on social media urging South Korea to sell the 'Cheongung-II' missile system to Ukraine. The author argued that selling Cheongung-II would not only improve relations between South Korea and the United States but also contribute to solving Ukraine's shortage of interceptor missiles. Trump has previously expressed dissatisfaction with South Korea, citing reasons such as its refusal to support the Hormuz Strait. This column sharing is analyzed as an indication that Trump intends to demand further contributions from South Korea in supporting Ukraine. Cheongung-II is a core part of South Korea's missile defense system and was developed to counter aerial threats, including North Korea's ballistic missiles.