South Korea said it is not extending the real-time classified military information sharing pact with Japan, the General Security of Military Information Agreement, otherwise known as GSOMIA.
"The South Korean government has decided to end the General Security of Military Information Agreement and will inform Japan of the decision via a diplomatic channel, before the notification deadline."
South Korea's presidential office cited a "grave change" in security cooperation conditions, in addition to Japan's continued refusal to accept Seoul's dialogue proposals.
The South Korean government said that Japan has violated bilateral trust by accusing Seoul of illegally transferring chemical materials to North Korea, and used this ungrounded accusation as the reason for dropping South Korea from its whitelist of trusted trade partners.
Furthermore South Korea concluded that continuing GSOMIA with Japan does no longer meet the "national interest."
This is one of the strongest measures against Japan by South Korea a move that is seen to have raised the stakes in their deteriorating bilateral relations.
Seoul's decision is likely to have implications to the three-way security cooperation among South Korea, the U.S. and Japan.
The presidential office however said the decision to conclude GSOMIA does not mean the trilateral security partnership will weaken.
An official at the top office explained that South Korea has already conveyed its "inevitable" decision to the U.S., to which Washington reportedly "understood."
"South Korea's presidential office reiterated that the Seoul-Washington alliance will not be affected at any degree by the termination of the intel-sharing pact with Japan.
Shin Se-min, Arirang News."