Between 2010 and 2015, Tanzania received more than $320 million in assistance via the U.S. government’s Feed the Future Initiative – the most of any country. But despite these commitments and an average of six to seven percent annual economic growth since 2000, Tanzania did not meet the first Millennium Development Goal: to reduce hunger and extreme poverty by half by the end of 2015.

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.

Last month, the World Bank’s Fragility Forum in Washington, DC, brought together some 600 participants to discuss how to advance sustainable development in the context of increasing conflicts and violence. World Bank President Jim Yong Kim opened the forum by emphasizing that we are at a critical moment.

When anyone wishes to support – or defeat – a given position, the sturdiest method is to generate data to predict its consequences. Advocates generate reams of numbers to substantiate their preferred outcome.

In the middle of January, Deputy Secretary of Defense Robert Work signed off on one of the potentially most significant, if little-noticed, orders in recent Pentagon history. The directive told every corner of the Pentagon, including the office of the secretary of defense, the joint chiefs of staff, and all the combatant commands around the world, to put climate change front and center in their strategic planning.

Sitting at my desk looking at bills to be paid, the first one on the stack is for the water company, emblazoned with the phrase, “Water is Life.” Yes, we all know that. But really, as my teenagers would say, “Duh, Mom. So what?”

Well, here’s the “so what” on this World Water Day 2016.