1+90' T'he davn cf the nucr-eaa age brought 'ith it tbe simur-taneous realization ofth' trencndous potential of nuclear pover and its ominous capability for grobalannihil-ation. The d.estruction of Hiroshina and. Nagasaki, botn in terns oflm-ediate as vefl as fong-term horror, provided the most tragic demonstration ofruhat is, by todqy's standard.s, not even considered a "niniruum nucfear destTuctj.vecapability", A year before these events, the Danish nuc.rear physicist and rirobelLaureate Niel"s Bohr sent identical letters to president Roosevelt and primeuinister churchiu in r+hich he said 'rThe fact of imediate preponderance is therta rreaFon of unparaffeled power is being created vhich will -orff"t.ty change a]_Ifuture conditions of uarfare '.. unless, indeed some u.g"uuru.li alboui the control ofthe use of the new active rnaterials carr be obtained in due time, any temporaryedvantage, ho'ever great' may be outweighed by a perpetual rnenace to human society.-But th€6e prophetic vords went unheeded even as the worl-d was nearing the end oflis most destructive war.. _A nelr pattern of power relationship was aireadybeginnlng to energe, and it lras perhaps inevitaule that roilitary ptanners- woutaJ'egard the acquisition of nuclear weapons as an essential e1-ernent in the arsenal ofa great Poi"er. But it is one of the more ominous paradoxes of history that thehorror and tragedy of Hiroshima and Nagasaki shoul-d have imposed upon nifr.taryplarners the desire, as,r^re11 as the colrpulsion, to obtain, in ever increasingnrunbers and sophlstication, the r.{ea.pons that haa d.emonstrated this horrend-ouscapability fcr destruction. As a result, nucl-ear fieapons have now becone a"i:erpetual menace to human societyt', in Sot"i"-*o"a". )+91' xven if the arms race is not a new phenomenon u mankin., s present predicamentis certainly unique. whereas nost if nol alt pr.lri olls instances of eoipetitivearns build-up and rivarries in weapon deveropment have eventually culoinated inconflict on the battlefield, the present situation makes such a d6nouementunthinkable ' The developmrcnt of nuclear r're&pons has, at least for the present,drastically altered all miritary strategic trrinting. Never before have statesteen in a position to destroy the very basis of the continued existence of otherstates or regionsg never before has the destructive capacity of 'eapons been scrinmediate, complete and r.rniversal; never before has mankind been faced, as today,with the real d.anger of seff-extinction. l+92' still, the nuclear arsena.Is in the uor].d. have continued to grow in mrnibers andin their destructive capability. There exist today at least 40,OO0 to 50"OOOnuclear weapons ' the conbined. explosive power of which is believed to be equivalentto that of more than one million Hiroshima borobs or, to put it differently, some13-bi11ion tons of TNT, which represents nore than 3 tons for every nan, woman andchild on earth. rn spite of this, the number of warheads continues to increase,as does the accu'acy r^rith llhich these 'neapons can be delivered. As a consequence,the lethality and effectiveness of the arsenals are enha'ced much more than at\/35/392 English Annex ?age 151 numericaf cornparison of strate€{ic launchers or 1.rarheads woul-d inclicate. Large
**Analysis**
The text appears to be discussing the development and implications of nuclear weapons, highlighting their destructive potential and the ongoing arms race. It touches on the historical context, international relations, and the impact on human society. Given the focus on the technology and its consequences, I hypothesize that the text is more closely related to science and technology.

**Category**
Science and technology