Environmental diplomacy for Indonesia's natural sustainability

International diplomacy becomes important when it can strengthen domestic efforts, introduce new knowledge, expand partnerships, and build confidence that Indonesia is part of the global solution. Often, the success of environmental diplomacy is limited to achieving numerical targets for emissions, carbon reduction, or the size of green investments. Yet, the core of all these discussions is actually to ensure that the earth remains sustainable and a decent place for future generations to inhabit. Environmental diplomacy is not merely intergovernmental negotiation, but a meeting of various parties who share the responsibility of protecting our common home. The momentum of London Climate Action Week 2026 in London, United Kingdom, became an opportunity to implement environmental diplomacy for Indonesia, while demonstrating that Indonesia is ready with environmental issues that have now become a universal language transcending national borders, political systems, and short-term economic interests. Indonesia’s presence in the forum was not solely to fulfil an international invitation, but to show that this country, with its extraordinary natural wealth, has both the responsibility and the opportunity to help determine the future direction of the earth. One moment that drew attention was the opportunity for the Indonesian delegation to dialogue directly with King Charles III at the Super-pollutant High-level Reception at St. James’s Palace. On that occasion, the author, as part of the Indonesian representative, conveyed warm greetings from President Prabowo Subianto to King Charles. The reception given by King Charles showed that relations between nations are not always built through discussions on trade or security, but also through concern for nature conservation. King Charles’s response, appreciating the commitment of Indonesian President Prabowo to improving people’s welfare while safeguarding Indonesia’s biodiversity, carried an important message. King Charles’s attention to the Indonesian environment is not something that has just emerged. In 2008, while still holding the title Prince of Wales, he visited the Harapan Rainforest ecosystem restoration area in Jambi. The visit demonstrated his interest in understanding first-hand the challenges of tropical rainforest conservation, including the issue of illegal logging that threatens ecosystem sustainability. Such field experience shows that environmental concern becomes more meaningful when built through an understanding of the realities faced by the community.