This is the 10479th most frequent Korean word.
국가정보원
National Intelligence Service (NIS).
In this sentence, '국가정보원' is used as a singular noun representing the official intelligence organization, providing context to its function.
국가정보원은 대한민국의 정보기관이다.
The National Intelligence Service is the Republic of Korea's intelligence agency.
Here, '국가정보원' is used possessively, denoting staff or personnel associated with the organization.
국가정보원의 직원들은 국가 안보를 위해 노력한다.
Employees of the National Intelligence Service work for national security.
The word '국가정보원' functions as the subject that carries out the action, in this case, making announcements that were later publicized.