The document discusses several international organizations involved in international law, including the United Nations, international courts and tribunals, intergovernmental organizations, and non-governmental organizations. It provides details on the founding and purpose of the United Nations, the International Court of Justice, war crimes tribunals and the International Criminal Court. It also discusses the role and examples of intergovernmental organizations like the EU and ASEAN, as well as non-governmental organizations such as Amnesty International and Greenpeace. It concludes by noting Australia's active involvement with the UN and impact of UN treaties domestically, though there have been disagreements on issues like asylum seekers, indigenous people, and East Timor.