outcome of that initiative was General Assenbly resolution 2289 (XXII), adopted on 8 December L967, in which the AssembJ-y expressed its conviction thaE it was essential to continue urgently the examination of the question of the prohibitionof t,he use of nuclear weapons and of the conclusion of an appropriate inEernational convention. 11. At about the same time, the negotiations on the Treaty for the Prohibition of Nuclear lfeapons in LaEin Arnerica, also known as the Treaty of Tlatelolco, were concludedr r€pf,€senting an important regional contribution to Ehe prevention of nuclear war. That regional accord anong States of Latin America was signed atTlatelolco, Mexico, in 1967, creating a Latin Anerican nuclear-weapon-free zone.It has received repeated support from the General Assembly. By signing andratifying Protocol II of t.he Treaty, all five nuclear-neapon Povrers - China, France, the Soviet Union, ehe United Kingdom of Great Britain and Nort,hern Ireland and the United States of America - have undertaken to respect the denuclearized status of the zone and not to use or threaten to use nuclear neapons against theparties to the Treaty. L2. An important development took place in 1958. On 12 June, thd Generaf Assembly commended the Treaty on the Non-Proliferation of Nuclear Weapons for early signature and ratification by States. In this connection, on 19 June, the Security Council adopted resolution 255 (1968) containing so-called 'rpositive" security assurances to non-nuclear-vreapon States against aggression with nuclear weapons, or threat of such aggression.A/ 40/ 4e8 Engl ish Page 8 13. Since then, t.he non-nuclear-weapon St,ates have sought to have those assurances sErengthened so t.hat their renunciation of nuclear weapons would not place them ata permanent nilitary disadvantage and make them vulnerable to nuclear t,hreat. oruse. These efforts have not so far been successful. Significant differences in approach between non-nuclear-weapon States and certain nuclear'vreapon States have
**Analysis**
The text appears to be discussing international relations, disarmament, and arms control agreements, which suggests that it is related to global politics and security. The specific topics mentioned, such as the prohibition of nuclear weapons, the Treaty of Tlatelolco, and security assurances, also point towards a category that deals with international relations and security.

**Category**
International relations, Security