The Price of the Bomb: U.S. Responses to Allied Nuclear Proliferation

Abstract

This article examines how the United States responds to security partners after they acquire nuclear weapons. Focusing on Israel and Pakistan, it challenges the conventional view that allied nuclearization automatically triggers severe and enduring punishment. U.S. punitive measures were limited in both scope and duration. Israel faced no significant diplomatic, economic, or security penalties after its nuclear capability became apparent. Although Pakistan faced more conspicuous sanctions after its 1998 tests, these measures were unevenly applied and gradually relaxed. These responses reflected two dynamics. First, once nuclear acquisition became a fait accompli, punishment had limited utility for restoring a partner’s non-nuclear status. Second, Washington’s interest in preserving strategically valuable partners reduced its willingness to impose or sustain severe costs. Consequently, U.S. policy pivoted from punitive enforcement to damage limitation and relationship preservation. These findings inform contemporary policy debates surrounding potential South Korean nuclearization.