There are concerns that geoengineering, which involves manipulating the environment, could be used as a weapon of war. Some researchers and experts are exploring the potential risks and implications of using geoengineering in this way, with some warning about the possibility of "weather warriors". The use of geoengineering as a weapon is being discussed in the context of the environment as a potential tool for warfare, with some scientists expressing fears about the involvement of spy agencies in climate research.