 The following year, Agha Shahi made it clear to Alexander Haig that Pakistan "won't make a compromise" on its nuclear weapons program, but assured the U.S. that the country had adopted the policy of deliberate ambiguity, refraining itself to conduct nuclear tests to avoid or create divergence in the relations.In March 1986, the two countries agreed on a second multi-year (FY 1988–93) $4-billion economic development and security assistance program.On October 1, 1990, however, the United States suspended all military assistance and new economic aid to Pakistan under the Pressler Amendment, which required that the President certify annually that Pakistan "does not possess a nuclear explosive device."