formerly had the ISO 3166-1 codes NT and NTZ. The codes were discontinued in 1993. The FIPS 10-4 code for the Saudi Arabian–Iraqi neutral zone was IY; that code was deleted in 1992. See also Geography of Iraq Geography of Saudi Arabia Unification of Saudi Arabia Saudi Arabia–United Arab Emirates border dispute Saudi–Kuwaiti neutral zone Iraq–Saudi Arabia border References External links The Straight Dope on the Neutral Zone Arabian Boundary Disputes International Boundary Study No. 111 International Frontier Treaty Between Saudi Arabia and Iraq splitting the Neutral Zone, 2 July 1975 20th century in Saudi Arabia 20th century in Iraq Disputed territories in the Persian Gulf Territorial disputes of Saudi Arabia Territorial disputes of Iraq Iraq–Saudi Arabia border Iraq–Saudi Arabia relations 1922 establishments in Asia Demilitarized zones 1981 disestablishments in Asia