The United States and NATO allies regularly experience from Russia major cyber-attacks penetrating government agencies and critical infrastructures for electric power, telecommunications, transportation and other sectors vital to electronic civilization. These events practice a new way of warfare, including EMP attacks, that could blackout North America and NATO Europe, and win World War III at the speed of light. Any nuclear weapon detonated in outer space, 30 kilometers or higher, will generate a high-altitude electromagnetic pulse (HEMP) damaging all kinds of electronics, blacking-out electric grids and collapsing other life-sustaining critical infrastructures. No blast, thermal, fallout or effects other than HEMP are experienced in the atmosphere and on the ground.
