The European Union (EU) is now increasingly committed to increasing cooperation in handling climate change, as a response to increasingly urgent global challenges. These efforts not only focus on reducing greenhouse gas emissions, but also include the development of green technologies and preserving biodiversity. Through ambitious policies and initiatives, the European Union seeks to lead the world in environmental protection. One of the key steps is the formulation of the “Fit for 55” legislative package, which aims to reduce greenhouse gas emissions by at least 55% by 2030. This package includes energy policy reforms, sustainable mobility and emissions reductions in the industrial sector. All EU member states are encouraged to comply with the targets set, encouraging cooperation between them to share technology and best practices. Apart from that, the EU is also active in building international partnerships. The European Union has held various meetings and conferences to provide support to developing countries in facing the impacts of climate change. Initiatives such as the European Green Deal target investment in environmental projects, creating green jobs and reducing social inequality. The European Union’s role in international agreements, such as the Kyoto Protocol and the Paris Agreement, demonstrates the EU’s commitment to reducing global emissions. In multidimensional cooperation, the EU puts forward an action plan that supports the clean energy transition and sustainable development. The EU also introduced an emissions trading system (ETS) that provides incentives for companies to reduce their emissions. Education and public awareness are also important focuses. The European Union promotes programs that raise awareness about climate change, encouraging people to participate in environmental initiatives. It is hoped that this awareness can encourage sustainable behavior at the individual and community level. Regional cooperation in research and innovation is also prioritized. The EU facilitates research projects related to climate change, including the development of renewable energy technologies and adaptation solutions for some of the most affected sectors, such as agriculture and fisheries. This science-based approach is expected to strengthen resilience to climate change. Cooperation between EU member states is key to achieving this goal. Exchange of experiences and successes in policy implementation can accelerate the adoption of sustainable practices. EU budgetary arrangements are also geared towards supporting member states in climate problem-solving projects, promoting closer collaboration. The declaration signed by the leaders of member countries shows a collective agreement to tackle climate change. By integrating sustainability principles in all aspects of policy, the EU has the ambition to create a sustainable and low-emission economy. In facing global challenges, international cooperation cannot be separated from EU efforts. His commitment will serve as a model for other countries in pursuing their climate goals, demonstrating that global cooperation is critical in confronting this grave threat.