U.N. Secretary General Invokes Article 99, Asking to Declare a Cease-Fire in Gaza
New York Times
The move was a major step by the secretary general, António Guterres, in his efforts to stop the war, which he described as a humanitarian disaster that threatened international security.
https://www.nytimes.com/2023/12/07/world/middleeast/un-article-99-gaza-cease-fire.html