Reaffirms its resolution 405 ( 1977), in which it had, among other provisions, taken note of the report70 of the Security Council Special Mission to the People's Republic of Benin established under resolution 404 (1977) of 8 February 1977 and strongly condemned the act of armed aggression perpetrated against the People's Republic of Benin on 16 January 1977 and all forms of external interference in the interna! affairs of Member States, including the use of international mercenaries to destabilize States and/or to violate their territorial integrity, sovereignty and independence;