Solar Radiation Management reflects sunlight back to space through stratospheric aerosol injection or marine cloud brightening, potentially reducing global temperatures by 1-4°C within months to years. Mount Pinatubo's 1991 eruption provides natural precedent demonstrating 0.5°C cooling for 2-3 years, yet illustrating unintended consequences including ozone depletion & monsoon disruption. Solar Radiation Management's termination problem presents unprecedented governance challenges, wherein rapid warming follows deployment cessation, potentially creating permanent technological dependence & intergenerational burden transfer requiring indefinite international cooperation.