Global Zero: No First Use Facts Global ZeroAugust 14, 2019No First Use” is a commitment to never use nuclear weapons first under any circumstances, whether as a preemptive attack or first strike, or in response to non-nuclear attack of any kind. Click to email a link to a friend (Opens in new window)Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window) Read the full article.