The State Department writes to Islamabad urging Pakistan to not react if in fact India chooses to launch a nuclear test. On 15 December the New York Times published a story by Tim Weiner, under the headline “US Suspects India Prepares to Conduct Nuclear Test.” While some Indian journalists and policy experts were convinced that the story was a US government plant, Weiner had simply used due diligence in pursuing a lead from a non-government expert on nuclear proliferation issues. Worried that the story would exacerbate regional tensions by encouraging Pakistan to “act in a manner that jeopardizes our nonproliferation efforts in South Asia,” the Department wanted to enlist the Chinese to encourage the Pakistanis to “exercise restraint in response to these reports.”

The State Department’s Bureau of Intelligence and Research (INR) evaluates the available intelligence on India’s nuclear intentions. There were varying reports that India would test a device that month, sometime in 1972, or that the government was undertaking a program to test a “peaceful nuclear explosive.” According to INR, India had the capability to produce some 20-30 weapons, and it could easily test a device in an underground site, such as an abandoned mine, that would be hard to discover. Because the U.S. government had given a “relatively modest priority to... relevant intelligence collection activities” a “concerted effort by India to conceal such preparations... may well succeed.” What would motivate India to test, the analysts opined, were domestic political pressures and concerns about China and Pakistan.