Physicists have demonstrated scientifically that anti-ballistic missile (ABM) umbrellas have inherent weaknesses that render them largely ineffective. Critics have proffered scientific evidence, including documented failures of Patriot missile defenses in the First Persian Gulf War, to support findings. Rather than address critics, Washington officialdom has persecuted them. Vast profits are available to manufacturers of ABM systems; hence the silencing of scientists. Iran and Russia are aware of ABM weaknesses, which is why they have invested extensively in penetrating ABM through electronic warfare, drones, cruise, ballistic, and hypersonic missiles. An overview of why ABM systems, and anti-rocket systems like Iron Dome, usually fail.