It is difficult to find a country feeling the negative impacts of climate change more severely than Bangladesh. Name any alarming, seemingly far off effect of a warming world being discussed in the halls of Washington or the summits of Copenhagen, and there is a good chance Bangladesh is experiencing it today. Flooding, drought, sea level rise, mass migration, and crushing poverty are exacerbated by a growing population and rapid urbanization. This perfect storm of climactic and demographic trends presents a looming crisis for Bangladesh, no more so than when it comes to food security.

Sub-Saharan Africa is not only the fastest growing region of the world demographically but is also one of the most vulnerable to climate changes, according to many measures, and already facing natural resource scarcity in many areas. These factors combine with existing development challenges to create security threats that African governments and the United States should be concerned with, says ECSP Director Roger-Mark De Souza in a presentation for the Africa Center for Strategic Studies’ introductory course on demography and the environment at the National Defense University.

The original version of this article first appeared on The Globalist.

Haze may be the new weapon of mass destruction. Not in the narrow sense of an incoming ballistic missile, of course, but for millions in Southeast Asia, this summer’s sooty haze poses a threat more dire than a nuclear-tipped missile.

Population aging and decline are frequently described as a threat to countries’ economic development and social stability. Evocative language, such as “demographic winter” and “graying of the great powers,” portrays the serious consequences that many observers envision as fertility and growth rates decline and the elderly comprise a greater percentage of the population. These concerns reach around the globe, including in Africa, which has the lowest percentage of elderly among the world’s major regions.

To use the military parlance, climate change is often considered a “threat multiplier,” challenging stability and development around the world by exacerbating underlying conditions of vulnerability. South Asia is one region that faces multiple stressors that have the potential to feedback off each other.

Higher temperatures, more extreme weather, rising sea levels, flooding, and increased cyclonic activity in the Bay of Bengal and the Arabian Sea are reshaping the environment, warns the Center for American Progress (CAP) in a report.