The main purpose of the No Nuclear Testing Act of 2025 is to prevent the use of federal funds for conducting explosive nuclear weapons tests. This legislation aims to reinforce a commitment to non-proliferation and to promote global stability by discouraging the testing of nuclear weapons. Key provisions of the Act include a clear prohibition on the use of funds for any explosive nuclear weapons tests that produce a yield. This applies to funds that are authorized for the fiscal year 2026 and any funds that were previously authorized and are still available at the time the law is enacted.