on Ehe applicablon of conf ictence-bu ild ing meaaurea. Negotiations on conf idence-bui lding nea€urea nuat, in s'onfor[ley eith patagEaPh I of the Flnal Docunent, be baseal on the strict obaervance of, the purpoaes and prlnclplee enahrined in the Charter of tbe United Natlona.A/ 40 /553 EngI isb Page 50 191. Reg ional arrangenents suchArab League, the Organization of South-Ea3t Asian Nations (ASEAN,polillcal activity and at tinesF. Enhancing regional, co-operation as the Organlzation of African Unity (OAU), the Anerican States (OAS) anal Ehe Associatlon of tlave provided a means of cotrdinat.ing regionalof resolving concerns of regional securley. 192' Althougb there has been sone gucces€ in the political and econonic fields,reg ional arrangenents have nob been equally effective for security purpoEes.successful peace-keeping effortE by the oa! in the 1969 t'ar betreen uonduras andEl Salvador hint aC the posslbilitle€, but ao far such exaDples atand ase:(ceptions. tlhire reglonar organizations are nell placed to itefine the needs forpeace-keeping. they have insufficient neana for its ioplenenlatton. In soneinstances, oAU tras played an inportant role in reconcillng, nedlating anal aolvinglocal conflicts on the continent. l'93. Urgent nea€ure' to atrengthen the rore of Ehe untted Nations shourd go hanal inhand with measure8 to sErengtben regional approacheE to security, proviateal thatsucb arrangenents 0r ac[ivities are consiEtenE rith the purposes and principres ofChe United Nat iong.