\70. ttre nain obligations of the parties to the Treaty are tc undertake to useexclusively for peaceful purposes the nuclear naterial and facilities ffhich are under their Jurisdiction, and to prohibit and prevent in their respectiveterritories: (a) The testing, use, manufacture, production or acolisition by any means rnhatsoever of B.ny nuclear veapons, by the parties thenselves, directfy or in.Jir"ar'il \/ -n ].ahal f ^f aha'^ha Al ca ^' i^ --.' ^.-.- *,., -ther vay l (b) The receint, storage, installation, deplo]'nent and any form of possession of any nuc.Iear veapons, directly or indirectly, by the r:artiesthenselves, by anyone on their behalf or in any other vay. l-"r.fI.'lhe'l reaty realfirnis the righb cf the contracting parties to use n_rc_Lear energy for peaceful purposes, in particular for their econonic develoment andA/ 35 / 392 English l\naex Page 144 social progress. This incl-ud.es the right to conduct nuclear explosions for peaceful purposes provided that no obligations of the Treaty are violated., l+72. The Treaty is in force fo" 22 States of the region which have r^raived therequirenents laid do.,m for its final entry into force, Two States, Brazil andChile, have signed and ratified the agreement but have not waived theseF6^rliFAnah+. o^ +L.+ +L- Treaty is not in force for them. Srazil has officiallv decl-ared that it consid.ers itself bor:nd, in accordance with the norrns ofinternational law, not to engage in acts which infringe the objectives of tlieTreaty of Tlatelolco. One State, Argentina. has signed and, during the tenthspecial session of the General Assembly, announced that it vould rat ify theTreaty, and two States of the region, Cuba and Guyana" have not yet signed it. Tfio countries which aecently became independent, Saint l,ucia and. Dorninica, have not rtat ha.^ma ra*+ia.
**Analysis**
The text appears to be discussing the Treaty of Tlatelolco, a treaty that aims to prevent the proliferation of nuclear weapons in the region. The treaty focuses on the peaceful use of nuclear energy and the prohibition of nuclear weapons. The text mentions the rights of contracting parties to use nuclear energy for peaceful purposes, including economic development and social progress.

**Category**
Natural resources and environment, International trade