Bilateral agreements are treaties or arrangements made between two parties, often countries, to address specific issues such as trade, defense, or environmental concerns. These agreements allow the involved parties to negotiate terms that directly benefit their mutual interests, fostering cooperation and understanding. In contrast, multilateral agreements involve three or more parties, typically countries, working together to tackle broader issues that affect multiple nations, such as climate change or global trade. These agreements aim to create a unified approach, allowing for collective action and shared responsibilities among the participating countries, enhancing global collaboration.