Global trends, from climate change and population dynamics to food, water, and energy scarcity, threaten to complicate global security, diplomatic efforts, and development policy. In the United States we are increasingly responding to these trends, rather than anticipating and planning for them.

The past decade has brought ground-shaking changes to global energy markets. The unconventional fuel boom has unexpectedly reduced U.S. dependence on oil imports, while in the Asia-Pacific region, energy-constrained nations are increasingly reliant on foreign sources to meet their soaring demand. With the U.S. slated to export liquid natural gas (LNG) to Asia as early as 2017, a new energy era has come.

This year’s World Water Day is taking on a broader theme than years past: sustainable development. The theme makes sense as two major international processes – the drafting of the Sustainable Development Goals to replace the Millennium Development Goals, and the most anticipated UN Climate Summit in years – are taking place in 2015. Decisions made over the next nine months will play a huge role in relationships between nations and global development priorities going forward.

Climate change negotiations seem to crawl along interminably at the pace of the glaciers they are meant to protect, with little perceptible progress as meeting follows meeting and conference follows lackluster conference. But this year we are seeing remarkable momentum building toward a historic conference in Paris in the closing days of 2015, by the end of which we will either have a new international agreement on cutting greenhouse gas emissions, or we will have seen the last of truly global efforts to strike a deal on saving our planet.