Home2003 Treaties and Agreements ...Ukraine (03-918) – Amendment of Nonproliferation Agreement of October 25, 1993, as extended. hide Ukraine (03-918) – Amendment of Nonproliferation Agreement of October 25, 1993, as extended. TIAS Office of Treaty Affairs September 18, 2003 Weapons: Nonproliferation Effected by exchange of notes at Kyiv July 24 and September 18, 2003; entered into force September 18, 2003. Extension of agreement signed October 25, 1993: TIAS 93-1231. Agreement previously extended June 30 and July 29, 1999: TIAS 99-729. Download Attachment [2 MB] Tags Nuclear Nonproliferation Treaties Ukraine Weapons