The news neither argues nor explains. It is a style of recording society, spreading information and reflecting the times, so it is called "news". News includes news, newsletters, features, sketches, journalists' newsletters, investigation reports and other genres, as well as words, sounds, pictures, videos and other forms, which are specially used by media organizations and speak with facts, and are characterized by being quick, timely, true and concise.
News sometimes needs to explain the relevant background and sometimes needs to comment, so it is related to expository and argumentative articles. But on the whole, it is neither a description nor a discussion.