Home1998 Treaties and Agreements ...Ethiopia (98-206) – Defense Assistance Agreement hide Ethiopia (98-206) – Defense Assistance Agreement TIAS Office of Treaty Affairs February 6, 1998 Defense: Assistance Agreement effected by Exchange of Notes at Addis Ababa February 2 and 6, 1998; Entered into force February 6, 1998. Download attachment [414 KB] Tags Defense Ethiopia Treaties