Why Did The U.S. Launch A Nuclear Missile That Would Be Visible From L.A. Without Any Warning?

Right now, the United States and China are in an undeclared state of war. China stands ready to strike the USA with nuclear warheads or high altitude EMP weapons that would destroy the U.S. power grid and cause 90% casualties across the unprepared population. Legendary American journalist Ted Koppel has even written a book about this entitled –  Lights Out: A Cyberattack,  A Nation Unprepared, Surviving the Aftermath.