denunciation -
Proclamation; announcement; a publishing.
denunciation -
The act of denouncing; public menace or accusation; the act of inveighing against, stigmatizing, or publicly arraigning; arraignment.
denunciation -
That by which anything is denounced; threat of evil; public menace or accusation; arraignment.
Wikipedia
Denunciation refers to the announcement of a treaty's termination. Some treaties contain a termination clause that specifies that the treaty will terminate if a certain number of nations denounce the treaty. For instance, the Single Convention on Narcotic Drugs' Article 41 specifies that the treaty will terminate if, as a result of denunciations, the number of Parties falls below 40.