Meanwhile, South Korea, the United States and Japan have completed work on a three-way communication hotline, in a further sign of growing trilateral security cooperation.
The hotline comes at a time of military tensions with North Korea and China’s growing regional influence.
The three countries’ leaders announced a commitment to consult each other in times of crisis at a summit in Camp David, in August.
According to reports, the hotline is to be used by the leaders or their top national security advisers, during security crises