Last year, for the first time, the United States voted in the U.N. General Assembly against a traditional resolution calling for negotiation of legally binding negative security assurances (NSAs) by nuclear-weapon states. These are promises not to use nuclear weapons against nuclear Non-Proliferation Treaty (NPT) states-parties that have promised not to acquire them. In the debate, the U.S. delegation explained that the United States "opposes a treaty on negative security assurances or any other binding instrument on security assurances."

U.S. military officials have long opposed explicit promises not to use nuclear weapons against countries that do not have them. Prior to the current administration, however, the U.S. government had rarely been so clear in stating its opposition. This new position is contrary to U.S. national interests.

U.S. superiority in conventional weapons and the advent of precision-guided munitions means that the United States does not need to use or threaten to use nuclear weapons to achieve its military goals effectively, even against those states that possess chemical or biological weapons. Indeed, the United States needs to be prepared to use nuclear weapons only in response to an attack with nuclear weapons. Moreover, the U.S. refusal to endorse NSAs only encourages additional countries, including U.S. enemies, to acquire nuclear weapons.