International non-governmental environmental organizations are one of the key participants of the global policy. The analysis of their achievements reveals that they influence the decisions of the authorities at different levels. Many of the proposals related to the climate change and creation of the "green" jobs that are today on the international agenda, were conceived, developed or promoted by NGOs. Most of the political parties in democratic countries take into account ecological issues and promise to ensure the clean environment. The most successful NGO activities are concentrated at the micro level, where they cooperate with municipal authorities for the implementation of local ecoinitiatives. When interacting with businesses, non-governmental organizations implement ethical standards in the practice of corporations. However, the «green» movement has its weak points. They are criticized for the misuse of funds, the shortcomings of financial management, the convergence with political elites and corporations. More serious charges are associated with the growing radicalization of the movement, with the participation of ecologists in extremist actions, with causing material damage to industrial enterprises, and, as a consequence, to the economic development of national states. Such actions destabilize political situation and cause reputational damage to the ecological movement.