?. At the tenth special session the General Assembly also pointed to theiroportant need for the United Nations to increase the dissenination of infornationabout the arnament s race and. arl natters rerated. to d i sarmament vith the firr_r-co-operation of its Menber States. ftre question of nuclear disarmsment i.s folemostin this-respect and the present report can therefore be seen as a concrete effortto fulfil an important provision of the Final Document " 3, Subsequentl-y, ttle General Assembly adopteal resolution 33/gL D" the operativeparagraphs of which read as follor^rs; 'r1. -R'qui-sts the sec rr-tary-General , l,'ith the assistance cf qualifledexperts, l-/ to carry out a comFTehensive study providing facttr.al informa.tionon pres*nt nucleir arsenals, trenCs in the technological develop'ent ofnuclear-vealcn systens, the effects of their use and the inplic;ticns forinternational security as rre11 as fcr negotiations cn disarmaraent of: (a) The doctrines of deterrence and. othe" theories concerningnuclear weapons; (b) Tire continued quant itat ive increase and qualitative improvenentand development of nuclear_veapon systetrs; "2" !g.q ql,mqnds- that the stlldy" \rhile airning: at being as cornprehensive aspossibl'' stlo.,fA-iG--tased on open naterial and such further informFtion thatl{ember States nay wish ta malle available for the ulrruose of tho strrrjy: l/ Subsequently referred to as the croup of Eq)erts on a ComprehensiveStud.y on Nuclear l{eapons,A/35 /392 English Annexpage T "3. Inviles all Governrnents to co-operate with tht' cecretary-General so that the objectives of the study ray be achieved i "1+. nequests the Secretary-General to subnit the final- I'elort to the cenera]- As sembl-y at its thirty-fifth session." \, The present study is the result of action ta.ken as a consequence of the adoption of resolution 33/9L D. It follovs up the previous united ltrations study on nuclear weapons, carried out more than ]2 years ago: nffof the Pos Use of Nucleav l^Ieapons and the Securitv and. Ecoqg4lc-@Llgg! for S'lates of the Ac tisof to reca11 ofreport , "91. since the sense of insecuxity on the part of nations is the