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• (Brief 2026-10) Deterioration of Sino–Japanese Relations and Future Prospects: Focusing on the Taiwan Issue

  2026-03-04 조회수 : 4,134 Kitae LEE

  Deterioration of Sino–Japanese Relations and Future Prospects: Focusing on the Taiwan Issue Kitae LEEktleekorea@sejong.orgSenior Researc...

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  [Sejong Focus] The Dawn of the 'Kim Jong-un 2.0 Era' and Its Implications for the Kim Ju-ae Succession System — An Assessment of Power Elite Changes at North Korea's 9th Workers' Party Congress —

  2026-02-27 조회수 : 3,911 Seong-Chang CHEONG

  The years 2025 and 2026 are expected to represent a new turning point in ROK–China relations. Since the launch of the Lee Jae-myung gov...

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  [Sejong Focus] Military Affairs at North Korea's 9th Party Congress: Assessment and Implications

  2026-02-27 조회수 : 2,605 Beomchul SHIN

  North Korea's 9th Party Congress concluded on February 25. Defense policy pronouncements, absent from the earlier sessions of the congr...

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  [Sejong Focus] A New Security Architecture for the Post-Extended Deterrence Era — A Proposal for the 'Middle Power 5 (MP5)' Security Consultative Mechanism among Korea, Japan, France, UK, & Germany

  2026-02-24 조회수 : 3,123 Seong-Chang CHEONG

  In this paper, 'MP5 (Middle Power 5)' refers to a proposed security consultative mechanism comprising five nations: Korea, Japan, Franc...

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  [Sejong Focus] China’s Export Controls on Dual-Use Items to Japan and Implications for South Korea

  2026-02-19 조회수 : 8,105 Byung Chul LEE

  In early 2026, the security and economic environment in East Asia is entering a phase of structural tension. Following remarks made by ...

• (Brief 2026-07) From Confrontation to Managed Stability in ROK-China Relations: The Lee Jae-myung Administration’s Policy Shift Toward China and an Assessment of the ROK-China Summit

  2026-02-12 조회수 : 2,656 Jae-hung CHUNG

  From Confrontation to Managed Stability in ROK-China Relations: The Lee Jae-myung Administration’s Policy Shift Toward China and an Asses...

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  [Sejong Focus] Post-New START: Toward a New Era of Nuclear Arms Competition?

  2026-02-12 조회수 : 3,826 Sang Hyun LEE

  The U.S.–Russia New Strategic Arms Reduction Treaty(New START) expired on February 5, 2026. This marks the end of the New START Treaty,...

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  [Sejong Focus] Strategy and Roadmap for ROK-France Cooperation on Nuclear-Powered Submarines: LEU-Based Naval Integration and a Mutually Beneficial Partnership Model

  2026-02-10 조회수 : 6,847 Seong-Chang CHEONG

  South Korea’s development of nuclear-powered submarines has a far longer history than is generally recognized. In 1994, when the first ...

• (Brief 2026-05) Key Elements of the 2026 U.S. National Defense Strategy and Policy Implications

  2026-02-09 조회수 : 3,923 Beomchul SHIN

  Key Elements of the 2026 U.S. National Defense Strategy and Policy Implications Beomchul SHINbcshin@sejong.orgPrincipal Research FellowS...

• (Brief 2026-04) Deployment of U.S. Strategic Assets on the Korean Peninsula in the Nuclear Era: Problems and Policy Alternatives 

  2026-02-04 조회수 : 3,961 Seong-Whun CHEON

  Deployment of U.S. Strategic Assets on the Korean Peninsula in the Nuclear Era : Problems and Policy Alternatives Seong-Whun CHEONdr.cheo...