national Rlvers, Inrrneni ty of States, State Responsi- bi.].ity or Draft Code of Offences.. This lack of dlrectLon .had also been demonstrated in the slaLemate experlenced in the adoption of a Convention on Succession of Statesj.n regard to matters other ttran Treaties. fhere has been some understandable critlcism. that the Sixth Corr[nit-lee had at times been over polltlclsed but this is perhaps Lnevitable to a degree in the context that development of international law is closely lLnked wittt the promotion of co-operatlon in the political fleld as envisaged ln Article 13 of the Charter. An overall review of ttre working of the United Nations over the. ttrlrty-nine years tends to reve aI far greater areas of progress and effectlve action throuEhx.A/tto/725 EngI lah Page 65 the work of ttre organization than the popul ar fuflpresslon . would seem to bear out. It.had achleved s pe ctaclrf ar results i.n spdedlng on the terrLtorles unde r tnrstee- ship and ttre non-self-governing terrltorles to firll nationhood and the nembership oi the United Natlong has r:ow vlrtually become unlve rsal wlth the exceptlon of a few cases. fn the f,leld of co<lificaticn and progresslve development of international law the results have been encour.agl-ng wj.th the conclus lon of the Unlted Nations @nventl-on on the Law of the SE3, in 1982 and ln estab- lishing on a firm footlng the law relatlnq to such matters as dlplomatic and consular relations, law of treatles andj a nunloe r of other areas includlng state . succcssion and outdr space. RecorftTendatLons of far reachingr sl.gnl.flcance have also emerged 1n the shape 'of Conrtenttons or ceneral Assernbly Resolutlons ln the .flcld of Dlsannament, Nuclear vJeapons, Rules of warfare, Protectlon of the Envlronment etc. Conventlons of a lail rnak.ing clralacter have also been pronoted by t-tre
**Analysis**
The text discusses the work and achievements of the United Nations over the past 39 years, highlighting the development of international law, the promotion of cooperation, and the conclusion of various conventions and resolutions. It also touches on the organization's role in matters such as state succession, disarmament, and the protection of the environment. Based on this, it seems likely that the text is related to international cooperation and the development of international law, which is closely tied to the categories of International trade, Humanitarian aid and relief, and Science and technology.

**Category**
International trade, Humanitarian aid and relief, Science and technology