capability. It is this facior coupled with the qualits.tive improvernents in the capability of the systen. ).!nq Tr i< nosqihte to calcu-late the numerical linits regard.ing the nr:rrber of nuclea^T weapons needed to assu.re one side the capability to l|resk an unacceptable lenel of destruction on the other' tO/ h has been shom' however ' that the lindts on the development and deployment oT-nuelear-weapon systens are not based solely on strategic calculations. 'fft""" t"y afso be internal pressu?es, in that - quantitat'ive increases in strategic systems rnay affect public end political perceptions of l'hat are comparable levefs od strategic power. Even when the strategic posture of one side is not undernj.ned ty quant it at ive increases in the forces of the other' there coul-d thus be pressutes to respond so that the over-all 1evel of strategic pover of each sid.e appears comparable . 1+06. Quafltitative increases i.n strategic systems can thus affect the stability of the nutual balance of deterxence r as one super-Polter nay deploy a force capable of destroying the land-based nissile Iaunchers of the other ' This can in turn be counteracied. by an increase in the mmbe' of land-based ndssiles ' rdhich have to be targeted, When leve1s of accuracy are improved' however, to the point- where a capabilityisachievedtodestroyonelciBMlauncherwithonewarhead,thenitvould' no longer be efficacious to seek some form of defence by increasing the number of nri.ssiles. The increased Tulnerability caused by improved accuracy dininishes, to some extent, the stxength of detefience. To counterb ef-anc e this situation ' a State nay have to naintain its retaliation capabilities either through increased invulnerability of its forces or by increasing the nurber of its fixed land-based nissiles. \0?. Quantitative increases of the strategic systerns of the super-Powers nay likevise prompt the nediul0-1evel nuclear Powers to strengthen their nuclear
**Analysis**
The text appears to be discussing the strategic and military implications of quantitative increases in nuclear weapons capabilities, highlighting the importance of maintaining a balance of power and the potential for internal pressures to drive nuclear arms racing. The language used is technical and focused on military concepts, suggesting that the text is related to the development and deployment of nuclear weapons. Given the context, it is likely that the text is discussing the impact of nuclear weapons on international relations and global security.

**Category**
Science and technology, International relations