The [[Kyoto Protocol]] iswas another international agreement that aimsaimed to reduce emissions and greenhouse gases in the atmosphere, focusing on what industrialized nations cancould do to limit this. Nations in the agreement were assigned maximum amounts of emissions, and if these were not met then there was a penalty of a lower limit.<ref name=":0">{{Cite web|url=https://unfccc.int/kyoto_protocol|title=What is the Kyoto Protocol? {{!}} UNFCCC|website=unfccc.int|access-date=2019-10-23}}</ref> It haswas not been successful in its initial goal of decreasing greenhouse gas emissions, evidenced by the facts in the further rounds of countries pledging commitments, there have beenwere many significant defections, including Canada and the US, and countries not following through on pledges. This createscreated a precedent where countries determinedetermined their own contributions and arewere able to withdraw from the agreement at any time, reintroducing the free-rider problem. The [[Doha Development Round|Doha Round]] extended the Kyoto Protocol to 2020 by reintroducing emissions targets,<ref name=":0" /> but was effectively replaced by the following Paris Agreement.
