Top diplomats from Seoul, Washington and Tokyo released a joint statement on Saturday.
They "strongly condemn" North Korea's recent ballistic missile launches.
Foreign minister Park Jin, along with his American and Japanese counterparts agreed to advance trilateral security cooperation.
Highlighting that the regime significantly increased the scale of its ballistic missile tests since September 2021, the trio urged Pyeongyang to immediately halt actions that violate international law.
They also expressed deep regret over UNSC's failure to adopt a resolution in response to the reclusive state's "blatant and repeated" acts.