This paper examines the impact of a countryâs embeddedness in international networks on the level at which a country implements an international environmental regime. Specifically, the paper examines whether countries that are more embedded in networks of inter-governmental organizations and in networks of international non-governmental organizations are more committed to implementing the United Nations Framework Convention on Climate Change (UNFCCC). As social phenomena seldom have univariate explanations, the paper controls for a host of economic, political, and sociological explanations both at domestic and at the international level. The paper employs a cross-sectional analysis across 128 countries with varying levels of economic development. The dependent variable is operationalized as an ordinal variable where the levels are ranked based a countryâs commitment to implementing the UNFCCC: (1) a country does not yet have a plan on how to implement the UNFCCC; (2) a country has designed such a plan and submitted it to the secretariat to the UNFCCC; (3) a country has begun implementing global climate change policies by hosting an international mitigation project; (4) a country has been regularly submitting inventories of its use of the global atmosphere; (5) a country has implemented mitigation policies domestically, including an increase in fossil fuel taxes and/or a decrease of fossil fuel subsidies, and/or provided funding for international mitigation projects. The key independent variable is operationalized as a countryâs embeddedness in international networks. Various kinds of networks enable communication among countries and are conduits of environmental norms. The paper operationalizes this embeddedness in the following ways: (a) a number of NGOs in each country that are members of the World Conservation Union and (b) a countryâs memberships in various intergovernmental environmental organizations. The paper controls for the impact of a host of factors at domestic and international levels. First, it controls for economic factors by including concentrated costs that are imposed on domestic actors as well as diffused benefits that accrue to diffused actors. Further, the paper controls for the impact of political factors, i.e. institutions providing access to policy making and those impacting the support base. The paper also controls for domestic sociological factors, i.e., normative influences on policy makers. Lastly, the paper controls for international factors, such as a countryâs dependence on exports of fossil fuels, and a share of this global environmental problem that can be attributed to a country. Empirical analysis, employing an ordinal logistic regression model, indicates that higher embeddedness in international networks of environmental NGOs is associated with higher level of implementation of this international regime. Further, the analysis supports the hypotheses of the impact of some of the control variables, including the impact of domestic institutions, local air pollution, and domestic environmental norms. In terms of the international factors, the analysis support the hypotheses on the impact of the role of countryâs export dependence on fossil fuels and the impact of the countryâs share in the global environmental problem. The empirical results are robust with respect to three specification checks. First, the results are robust with respect to how the dependent variable is treated. The results hold even when the dependent variable is conceptualized as nominal (using a multinomial logistic regression model). Second, the results are not impacted by the Kyoto-holdouts. Third, the results also hold with the inclusion of continental dummies in the model. ..PAT.-Unpublished Manuscript [ABSTRACT FROM AUTHOR]