2015 was a historic year for international commitments to sustainable development, climate change action, and new kinds of peacebuilding. For governments and policymakers, now comes the difficult task of living up to those commitments. [Video Below]

In an effort to scale-up climate change mitigation, the largest private sector engagement in the history of the United Nations was drafted to fund clean technology projects in developing countries. Carbon credits were to offset pollution in developed nations and pay for clean energy projects in developing countries. But many developed countries, including the United States, spurned the agreement, preferring to manage greenhouse gas emissions internally and build or retrofit infrastructure in ways that directly benefited their economies. The ambitions of the Kyoto Protocol, which went into effect in 2005, were subsequently stranded and then scrapped.

As international funding to support environmental management and development increases, the danger of associated corruption grows and requires greater attention. Small-island developing states (SIDS), greatly exposed to the damage caused by climate change, are particularly vulnerable. These small, trailblazing countries in the Pacific, Caribbean, and Indian Ocean are making progress in addressing climate threats, but will need international support and local commitment regarding rule of law and corruption in the climate sector as they try to prevent the worst effects of climate change and find a sustainable way to develop.

Today, new nations are pursuing civilian but dual-use nuclear capabilities, the threat of non-state actors seeking nuclear materials may be growing, and countries continue to debate proper ways to enhance nuclear safety, security, and nonproliferation systems to keep up with the pace of change. At the same time, governments worldwide are having difficulty managing the effects of a rapidly changing climate, such as more damaging natural disasters and resource stress. The relationships among nuclear, climate, and security risks are growing more complex and interconnected, and these issues are likely to begin converging in new ways. By early 2016, it has become clear that the international community must take a fresh look at the ways in which they are likely to connect and potentially collide in the years ahead, and foster deeper dialogue on what should be done about it.

This Earth Day, the United States, China, and Canada are among more than 170 countries expected to take part in the largest one-day signing of an international agreement in history. The ratification of the climate agreement hammered out at the Paris Conference of Parties (COP-21) last December could be the most significant elevation of environmental issues on the global stage yet.

In December 2015, representatives from 195 nations gathered in Paris for the 21^st Conference of the Parties (COP-21) to the UN Framework Convention on Climate Change. After two weeks of intensive negotiations, countries approved an agreement that charts new territory for global cooperation to address climate change. [Video Below]