May 24 2010 – South Korea suspends joint economic projects with the North after the torpedoing of the ROKS Cheonan, linking the sanctions to the incident and halting trade, investment and assistance except humanitarian aid[7].

2018 – The Moon Jae‑in administration launches the Korea‑U.S. Working Group to coordinate denuclearisation, sanctions and inter‑Korean cooperation, later criticized as a “pro‑American noose” that hampers inter‑Korean dialogue[16][18].

Dec 9 2025 – Seoul’s foreign ministry announces ongoing talks with Washington to create a regular meeting framework for coordinating North‑Korea policy, aiming to enable timely discussions and restore dialogue with Pyongyang[22].

Dec 10 2025 – Acting U.S. Ambassador Kevin Kim describes the alliance as maintaining a “very close” partnership on North‑Korea issues while meeting with foreign‑ministry official Jeong Yeon‑doo, underscoring productive coordination ahead of potential inter‑Korean talks[23].

Dec 15 2025 – South Korea and the United States schedule talks for Dec 16 to coordinate North‑Korea policy, marking the first such allied dialogue since the Lee Jae‑Myung government took office in June[21].

Dec 15 2025 – The unification ministry objects to the upcoming U.S.–South Korea talks, warning they could undermine inter‑Korean engagement and pledging to hold separate consultations if needed[20].

Dec 16 2025 – Comprehensive Seoul‑Washington discussions, anchored by the Oct 29 Gyeongju summit joint fact sheet, cover denuclearisation and broader bilateral issues; the unification ministry again declines participation, citing concerns over inter‑Korean ties[19].

Dec 17 2025 – South Korea and the United States assert that the December talks differ from the 2017‑19 working group, focusing on implementing the joint fact sheet rather than sanction‑screening mechanisms[18].

Dec 17 2025 – The unification ministry refuses to attend the U.S.–South Korea North‑Korea policy talks, warning the dialogue could evolve into a “working group” that impedes inter‑Korean cooperation and stating it may pursue direct U.S. consultations[17].

Dec 17 2025 – The unification ministry again declines participation in the U.S.–ROK consultative talks, emphasizing sovereignty over inter‑Korean policy and hinting at a separate channel with Washington[16].

Dec 18 2025 – Unification Minister Chung Dong‑young says President Donald Trump’s planned April visit to Beijing could be decisive for reviving North‑Korea talks, urging Seoul and Beijing to mediate and enlist Japan and Russia’s support[11].

Dec 18 2025 – In Beijing, First Vice‑Foreign Minister Park Yoon‑joo asks China to help foster conditions for resuming North‑Korea dialogue; Chinese Vice‑Foreign Minister Ma Zhaoxu reaffirms China’s constructive role in peninsula stability[15].

Dec 18 2025 – Chung pledges the unification ministry will lead North‑Korea policy, seeks sanctions relief, proposes an escrow‑based trade system and an express train linking Seoul to Beijing via the North[10].

Dec 19 2025 – President Lee Jae‑Myung orders a security‑ministers meeting to better coordinate North‑Korea policy across agencies, noting divergent foreign‑ and unification‑ministry approaches as a strategic asset[6].

Dec 19 2025 – Chung Dong‑young reiterates the unification ministry’s leading role in shaping North‑Korea policy, argues sanctions have “lost their bite,” and outlines plans for economic projects such as a Seoul‑Beijing high‑speed rail and tourism zones[7].

Dec 19 2025 – The government reports ten border crossings by North‑Korean soldiers in November and calls for pre‑emptive steps to reduce hostilities, while urging the reopening of stalled inter‑Korean exchanges[9].

Dec 19 2025 – South Korea urges China to aid in restarting talks, the UN Command objects to a DMZ access bill, North‑Korean female workers return from Beijing, and the IMO conducts a technical audit of North Korea’s maritime compliance[8].

Dec 26 2025 – National Security Adviser Wi Sung‑lac meets UN Secretary‑General Antonio Guterres in New York, delivering President Lee’s letter urging the UN chief to visit North Korea to help restore dialogue[4].

Jan 2 2026 – Unification Minister Chung calls on North Korea to resume talks “anytime, anywhere,” proposes cross‑border tourism projects such as the Wonsan‑Kalma zone and Samjiyon near Mount Paektu, and stresses Seoul does not support unification by absorption[3].

Jan 16 2026 – The unification and foreign ministries launch a vice‑ministerial‑level consultative channel on North‑Korea policy, with Vice Unification Minister Kim Nam‑jung and Jeong Yeon‑doo leading the inaugural luncheon to improve information sharing and policy alignment[2].

Jan 26 2026 – The unification ministry reviews the appointment of a special “peace on the Korean Peninsula” envoy to mobilise regional support for restarting U.S.–North Korea talks, aligning the review with the window before President Trump’s planned April China visit[1].