The document summarizes the UNFCCC, Kyoto Protocol, and Montreal Protocol. The UNFCCC is a 1992 treaty aimed at stabilizing greenhouse gas concentrations to prevent dangerous climate change. It lacks enforcement but established a framework for negotiating protocols like Kyoto. Kyoto set binding emissions reduction targets for developed nations from 2008-2012. The Montreal Protocol is a 1987 agreement to phase out ozone-depleting substances to protect the stratospheric ozone layer and reduce global warming.