Are younger countries at higher risk of civil conflict? The International Crisis Group’s 2018 list of 10 conflicts to watch suggests they might be: Like last year, intra-state conflicts (civil and ethnic conflicts within states, rather than wars between states) dominate the list, and among those, about 70 percent are within youthful countries, or states with a median age of 25.5 years or younger. The only multi-state cluster mentioned in both 2017 and 2018 lists is the Sahel, the world’s most youthful region.

It should be an excellent time to be a young Iranian: High school and college enrollments in the Islamic Republic rank near the top of Muslim-majority countries. Women have only about two children on average, compared to 6.5 in the mid-1980s. And childhood mortality is projected to approach North American levels in the next 15 years. Yet, as the recent protests show, many young Iranians feel left out. Job growth—especially for young adults—has failed to keep pace with development, while persistently high rates of inflation steadily drive up the cost of living and cut deeply into Iranians’ savings.

Just days before the 2016 Summer Olympics began in Rio de Janeiro, the Brazilian city faced an unsavory problem: how to handle its overwhelming sewage. Nearly half of Rio’s municipal wastewater flowed untreated into Guanabara Bay, where the waters were so polluted by sludge that direct contact was deemed a health hazard to Olympic athletes.

I pulled my horse to a stop along the banks of a little stream, which was wedged between two grassy hills speckled with wildflowers and pika holes, to admire the view of the Tibetan-Qinghai Plateau’s rolling hills evolving into snowcapped mountains.

“Conflicts are 35 percent more likely to be resolved and remain peaceful for 15 years if women are involved,” said Carla Koppell, vice president of the Center for Applied Conflict Transformation at the United States Institute of Peace, at a recent Wilson Center event on the role of women in war, security, and peace.

This One Goes to 11.

Eleven years ago this week, the New Security Beat began covering population, environment, and conflict connections. Today, our goal remains the same as in 2007: to provide insight on today’s new security threats and to share overlooked opportunities for cooperation. As we wrote then, “countries in crises often share the problems of rapid population growth and deteriorating environmental resources”: and unfortunately, the same trends continue undermine peace and deepen poverty. But we’ve also analyzed notable global efforts, including the Sustainable Development Goals and the growing resilience agenda, that offer hope for progress.

Since 1987, the number of women dying during pregnancy and delivery has dropped by 43 percent, saving hundreds of thousands of women’s lives—and changing the lives of their families—around the world. “Our achievement in making maternal mortality an injustice that needs to be recognized by health ministers, by heads of state, by heads of agencies, has been, I think, the single greatest achievement of the Safe Motherhood Initiative” since it began 30 years ago, said Ann Starrs, President and CEO of Guttmacher Institute, at a Wilson Center event marking the anniversary of this important effort.

This new year brings new projects—and some sad goodbyes. Today, I’m excited to begin my leadership of Sister Cities International, the world’s largest and oldest network of citizen diplomats. And I’m sorry to leave the Wilson Center, which has been my home for the last five years. But it’s not a long goodbye: I will continue to work with the Global Sustainability and Resilience team as a Global Fellow and as an advisor to the New Security Beat. In all of these roles, my New Year’s resolution is to renew our commitment to making a real difference in global well-being and sustainability. And while this year promises great changes, three key priorities will continue to inspire me and guide our collective efforts: resilience, complexity, and diplomacy.