Kirillov spoke about the “unknown fate” of a number of US chemical munitions. “According to our data, we are talking about compounds belonging to the class of amidide fluorophosphates, better known to the American public under the name Novichok,” said a representative of the Russian Ministry of Defense.

Until 2018, the United States reported 460 metric tons of unidentified chemical agents in annual declarations, which is about 2% of the total stockpile.