International coalitions are crucial in maintaining global security as they foster cooperation among nations to address common threats. They collectively tackle issues like terrorism, climate change, and health pandemics, pooling resources and expertise to create nuanced strategies. Through alliances such as NATO or the United Nations, these coalitions can facilitate diplomacy and conflict resolution, promoting peace. Additionally, joint military exercises and intelligence sharing enhance readiness and collaboration. However, the effectiveness of such coalitions often hinges on the political will of member states and their ability to navigate differing national interests.