Though publicly endorsing the 1988 decision to carry out the Chagai-I nuclear tests by Prime Minister Sharif, Mahmood began appearing on news channels as an outspoken opponent of Sharif, as Mahmood vehemently opposed Pakistan becoming a signatory state of the Nuclear Nonproliferation Treaty (NPT) and Comprehensive Nuclear-Test-Ban Treaty (CTBT). In Pakistan's popular news channels and newspapers, Mahmood gave numerous interviews, wrote articles, and lobbied against Sharif when learning that the Prime Minister had been willing to sign anti-nuclear weapon treaties, prompting the Pakistan Government to forcefully transfer Mahmood to a non-technical position at PAEC.