Norma relacionada
Practice Relating to Rule 20. Advance Warning
The Report on the Practice of Iraq states that the issuing of prior public warnings to civilian populations has become established practice. It cites the examples of a general warning given by the President of Iraq to Iranian citizens, warnings issued by the General Command of the Iraqi armed forces to ships not to approach the zones of military operation in the Gulf and warning raids by Iraqi planes over Iranian cities. 
Report on the Practice of Iraq, 1998, Chapter 1.6, referring to Press Conference by the Iraqi President, 10 November 1980, Encyclopedia of the Iraqi-Iranian War, Vol. I, p. 318, Military Communiqué No. 692, 29 April 1982, Military Communiqué No. 730, 2 June 1982, Military Communiqué No. 743, 7 June 1982, Military Communiqué No. 779, 17 July 1982, Military Communiqué No. 910, 21 November 1982, Speech of the President at the Iraqi Digla Secondary School in Kuwait, 6 February 1984 and Military Communiqué No. 1603, 29 September 1984.