Islamist militants based in Pakistan pose a major threat to regional and international security. Although this problem has only recently received widespread attention, Pakistan has long used militants as strategic tools to compensate for its severe political and material weakness. This use of Islamist militancy has constituted nothing less than a central component of Pakistani grand strategy; supporting jihad has been one of the principal means by which the Pakistani state has sought to produce security for itself. Contrary to the conventional wisdom, the strategy has not been wholly disastrous. Rather, it has achieved important domestic and international successes. Recently, however, Pakistan has begun to suffer from a “jihad paradox”: the very conditions that previously made Pakistan's militant policy useful now make it extremely dangerous. Thus, despite its past benefits, the strategy has outlived its utility, and Pakistan will have to abandon it to avoid catastrophe. Other weak states, which may also be tempted to use nonstate actors as strategic tools, should take the Pakistani case as a cautionary lesson.

The tenth anniversary of India's and Pakistan's 1998 nuclear tests enables scholars to revisit the issue of South Asian proliferation with a decade of hindsight. What lessons do the intervening years hold regarding nuclear weapons' impact on South Asian security? Some scholars claim that nuclear weapons had a beneficial effect during this period, helping to stabilize historically volatile Indo-Pakistani relations. Such optimistic analyses of proliferation's regional security impact are mistaken, however. Nuclear weapons have had two destabilizing effects on the South Asian security environment. First, nuclear weapons' ability to shield Pakistan against all-out Indian retaliation, and to attract international attention to Pakistan's dispute with India, encouraged aggressive Pakistani behavior. This, in turn, provoked forceful Indian responses, ranging from large-scale mobilization to limited war. Although the resulting Indo-Pakistani crises did not lead to nuclear or full-scale conventional conflict, such fortunate outcomes were not guaranteed and did not result primarily from nuclear deterrence. Second, these Indo-Pakistani crises led India to adopt a more aggressive conventional military posture toward Pakistan. This development could exacerbate regional security-dilemma dynamics and increase the likelihood of Indo-Pakistani conflict in years to come. Thus nuclear weapons not only destabilized South Asia in the first decade after the nuclear tests; they may damage the regional security environment well into the future.

Scholars attribute conventional violence in a nuclear South Asia to a phenomenon known as the “stability/instability paradox.” According to this paradox, the risk of nuclear war makes it unlikely that conventional confict will escalate to the nuclear level, thereby making conventional confict more likely. Although this phenomenon encouraged U.S.-Soviet violence during the Cold War, it does not explain the dynamics of the ongoing confict between India and Pakistan. Recent violence has seen Pakistan or its proxies launching limited attacks on Indian territory, and India refusing to retaliate in kind. The stability/instability paradox would not predict such behavior. A low probability of conventional war escalating to the nuclear level would reduce the ability of Pakistan's nuclear weapons to deter an Indian conventional attack. Because Pakistan is conventionally weaker than India, this would discourage Pakistani aggression and encourage robust Indian conventional retaliation against Pakistani provocations. Pakistani boldness and Indian restraint have actually resulted from instability in the strategic environment. A full-scale Indo-Pakistani conventional confict would create a significant risk of nuclear escalation. This danger enables Pakistan to launch limited attacks on India while deterring allout Indian conventional retaliation and attracting international attention to the two countries' dispute over Kashmir. Unlike in Cold War Europe, in contemporary South Asia nuclear danger facilitates, rather than impedes, conventional confict.