The long-awaited return of a joint Search and Rescue Exercise (SAREX) between the Republic of Korea (ROK) Navy and the Japanese Maritime Self-Defense Force in the East China Sea was confirmed earlier this month. After nine years, the exercise on June 7 represented an important change in the security framework in the region and a sign of improved relations between two of its leading powers. Since taking office in June 2025, South Korean President Lee Jae Myung has been re-evaluating the country’s foreign policy and approach to defense cooperation. He has advocated for a pragmatic approach to foreign policy, with decision-making informed by a rigorous assessment of the strategic environment. That assessment reflects the reality of a security environment that continues to deteriorate. The persistent threat posed by North Korea continues to shape South Korea’s strategic calculations, particularly as Pyongyang advances its nuclear capabilities. North Korea has already conducted six nuclear tests and is developing a diverse range of weapons of mass destruction, from intercontinental balli
