Home1999 Treaties and Agreements ...Ukraine (99-729) – Extension of Nonproliferation Agreement of October 25, 1993 hide Ukraine (99-729) – Extension of Nonproliferation Agreement of October 25, 1993 TIAS Office of Treaty Affairs July 29, 1999 Weapons: Nonproliferation Effected by exchange of notes at Kyiv June 30 and July 29, 1999; Entered into force July 29, 1999. Extension of agreement signed October 25, 1993: TIAS 93-1231. Download attachment [805 KB] Tags Nuclear Nonproliferation Treaties Ukraine Weapons