Nearly half a million demonstrators gathered in Madrid as the UN Climate Change Conference (officially COP25) opened in the Spanish city more than two weeks ago, with young Swedish activist Greta Thunberg the star of the show at a Dec. 6 mass rally. But despite being the longest climate summit yet, ending Dec. 15 after being extended two days, the affair ultimately amounted to little. Nearly 27,000 delegates came together with the supposed aim of finalizing the "rulebook" of the Paris Agreement, which is to officially take effect in 2020—settling rules for carbon markets and other mechanisms for international cooperation under Article 6 of the deal. But, unable to agree on terms for Article 6, delegates finally invoked "Rule 16" of the UN climate process—allowing them to put off the critical decisions for another year. This means there will have been no progress when COP26 is convened in Glasgow in November 2020. UN Secretary General António Guterres tweeted that he was "disappointed" with the results of COP25, and that "the international community lost an important opportunity to show increased ambition on mitigation, adaptation & finance to tackle the climate crisis." (CarbonBrief, BBC News, BBC News)

Taiwan's Council of Indigenous Peoples has signed an agreement with the Pacific Island state of the Marshall Islands aimed at increasing bilateral exchanges to promote Austronesian culture. The agreement seeks to foster cooperation between Taiwan's indigenous communities and the ethnically and linguistically related people of the Marshall Islands, particularly in the fields of language and preservation of traditional wisdom and skills. The agreement, signed last month, coincides with the opening of the UN International Year of Indigenous Languages, which acknowledges the critical state of many indigenous tongues, and seeks to promote their protection and use, both at national and international levels.

The 18 member states of the Pacific Islands Forum held their 49th summit in Nauru, issuing a statement (PDFi) Sept. 6 asserting that "climate change presents the single greatest threat to the livelihood, security and wellbeing of Pacific people." The leaders "reaffirmed the importance of immediate urgent action to combat climate change" and committed "to ensure effective progress on Pacific priorities with regards to the Paris Agreement" through the development of a guide. Leaders at the Forum also urged all countries to comply fully with their commitments to mitigate emissions, "including through the development and transfer of renewable energy," within their committed timeframes. The leaders also "called on the United States to return to the Paris Agreement on Climate Change."

The International Court of Justice (ICJ) on Oct. 5 refused (PDF) to hear a claim by the Marshall Islands that the UK, India and Pakistan have failed to halt the nuclear arms race, finding that it does not have jurisdiction over the matter. The Marshall Islands was the site for numerous nuclear tests carried out by the US during the Cold War arms race, and claims that such experience allows it to testify on the danger of a nuclear arms race. The nation accused nine countries of not complying with the 1968 Nuclear Non-Proliferation treaty (PDF). However, the ICJ can only consider the cases for Britain, India and Pakistan, as China, France, Israel, North Korea, Russia and the US have not recognized the court's jurisdiction. The Marshall Islands claims that these countries have breached their obligations under the treaty, which commits all states with nuclear capabilities "to pursue negotiations in good faith on effective measures relating to cessation of the nuclear arms race at an early date and to nuclear disarmament."