International ethics is important for a number of reasons. Some of the key ways in which international ethics matters include:

Establishing a Sense of Fairness and Justice: International ethics helps to establish standards for how countries should behave towards one another and sets expectations for how conflicts should be resolved. This can help to create a sense of fairness and justice in the international community.

Promoting Cooperation and Conflict Resolution: By establishing a set of shared values and principles, international ethics can help to encourage cooperation and facilitate the resolution of conflicts between countries.

Protecting Human Rights: International ethics plays a role in protecting human rights by establishing standards for how countries should treat their citizens and setting expectations for how countries should respond to human rights abuses.

Maintaining International Order: International ethics helps to maintain order in the international system by establishing a set of rules and expectations for how countries should interact with one another. This can help to prevent conflicts and promote stability in the international community.

Strengthening global governance: International ethics can help to strengthen global governance by establishing standards and norms that countries can follow when making decisions on issues of global concern, such as climate change and economic policy.

Overall, international ethics is important because it helps to create a more fair, just, and cooperative international system, which is essential for the well-being of all countries and their citizens.