L6? nh^"^ .rar.ar^hhaE+c.,,"o have sharpened differences anong States over the generqlquestions of nan-proliferati on and safeguards arrangements and the terms of '1 rr'la'r_ +.ra.lo l nr:r^inal iecrrn ic hnr.r nnnnorn hr. c,hhliay qia.f ac r'" di ,,i .t,1. r'r ,, vJ r qP [.f rqr +r-uJ. v!uua"_L_ryor Joj.ntly, to see tighter non-proliferation contro], should be reconciled withthe desire of othe" States for Greater access to nuclear technology fcr -eace_[u_tpurposes and econornic develotment. It is in this perspective that the Final Docunent of the Tenth special session of the General- Assenbly pointed to the needfor devefopment of an "international consensusfi on the question of nuctearnon-proliferation and the peaceful use of nuclear energ:y. In respect of the non-prol-i feration Treaty, many parties have emphasized their view that theefficacy of the Treaty as a measure of nuclear arms control o.epends upon maintenance of the tralance of obligations betveen the nuclear-weapon States and non-nuc.Ieal-weapon States which constitute the foundation upon which the Treatyrests. 468. One measure of non-proliferation has gained increasing international supportin recent years - the estabfishment of nucl-ear-veapon-free zones. fhe earl.r'proposals " r such ?ones vere made for areas, such as central Nurope, rnhercnuclear weapons l/ere already deDloyed. The on-Iy substanLive agreenent, lo-"rever,is the Treaty for the Plohibition of Nuclear Weapons in Latin America rihich for Inany years vas oro'roted by L1sxig. and other lahin Arerican States. i-69. ttris Treatv (often refer.red bo as Lhe Treaty of llatelo-Lco, aflcr lh(. name o-its place of signature) is the only international instrurnent agreed. upon so far establishing a zote free of nuclear r,{eapons in a populated region. Opened forsignature in 1957, the Treaty also established a system of control through a permanent supervisory body: the Agency for the Prohibition of Nuclear i.leapons inLatin Anerica ( OPANAL ) .