Governments have admitted to using them.
5-2-11 News 10 Special Report: Secrets in the Sky - YouTube
I watched your video. What "governments" have admitted using them? I saw no such "admission" in that news report.
(B) Such terms include exotic weapons systems such as--
(i) electronic, psychotronic, or information weapons;
(ii) chemtrails;
(iii) high altitude ultra low frequency weapons systems;
(iv) plasma, electromagnetic, sonic, or ultrasonic weapons;
(v) laser weapons systems;
(vi) strategic, theater, tactical, or extraterrestrial weapons; and
(vii) chemical, biological, environmental, climate, or tectonic weapons.
(C) The term `exotic weapons systems' includes weapons designed to damage space or natural ecosystems (such as the ionosphere and upper atmosphere) or climate, weather, and tectonic systems with the purpose of inducing damage or destruction upon a target population or region on earth or in space.
Bill Text - 107th Congress (2001-2002) - THOMAS (Library of Congress)
Your evidence of "governments have admitted to using them" is a bill written by Dennis Kucinich that "banned" them?