Do Nuclear Weapons Stabilize South Asian Militarized Crises? Evidence from the 1990 Case

Abstract

Scholars have claimed that nuclear weapons help to stabilize South Asia by preventing Indo-Pakistani militarized crises from escalating to the level of all-out conventional war. This article argues that while nuclear weapons have had cautionary effects on Indian and Pakistani decision makers, proliferation also has played a role in fomenting some of the very crises that scholars credit nuclear weapons with defusing. Moreover, nuclear deterrence was not always essential to preventing these crises from escalating to the level of outright war. The article illustrates its argument with evidence from the Indo-Pakistani militarized crisis of 1990. Leading scholars and analysts have argued that nuclear weapons help to prevent South Asian militarized crises from escalating to the level of all-out conventional war.1 This claim has important implications for the regional security environment and beyond. Given the volatile nature of Indo-Pakistani relations, reducing the likelihood of crisis escalation would make the subcontinent significantly safer. The claim also suggests that nuclear weapons could lower the probability of war in crisis-prone conflict dyads elsewhere in the world. This article takes a less sanguine view of nuclear weapons’ impact on South Asian militarized crises. It argues that while nuclear weapons have at times had important cautionary effects on Indian and Pakistani decision makers, proliferation has played a role in fomenting a number of the very crises that scholars credit nuclear weapons with defusing. Moreover, it is not clear that nuclear deterrence was essential to preventing some of these crises from escalating to the level of outright war. I illustrate my argument with evidence from the period when India and Pakistan were acquiring nascent nuclear weapons capabilities. I show that during the late 1980s, Pakistan’s emerging nuclear capacity emboldened Pakistani decision makers to provide extensive support to the emerging insurgency against Indian rule in Jammu and Kashmir. In early 1990, India responded with large-scale force deployments along the Line of Control and International Border, in an attempt to stem militant infiltration into Indian territory, and potentially to intimidate Pakistan into abandoning its Kashmir policy. Pakistan countered with large deployments of its own, and the result was a major Indo-Pakistani militarized standoff. Although scholars have credited Pakistani nuclear weapons with deterring India from attacking Pakistan during this crisis, the preponderance of available evidence suggests that Indian leaders never seriously considered striking Pakistan, and therefore were not in fact deterred from launching a war in 1990. Thus nuclear weapons played an important role in fomenting a major Indo-Pakistani crisis during this period, but probably were not instrumental in preventing the crisis from escalating to the level of outright war. Below, I briefly describe the emergence of the Kashmir insurgency. I then explain how Pakistan’s nuclear capacity encouraged it to support the uprising. Next, I show how conflict between Pakistan-supported guerillas and Indian security forces in Kashmir drove a spiral of tension between the two countries, which led to a stand-off between Indian and Pakistani armed forces in early 1990. Finally, I discuss the end of the 1990 crisis, and address the role that nuclear weapons played in its peaceful deescalation.