"Nations without the resources to do so may build virtual fortresses around their countries, preserving resources for themselves … As famine, disease, and weather-related disasters strike due to the abrupt climate change, many countries’ needs will exceed their carrying capacity. This will create a sense of desperation, which is likely to lead to offensive aggression in order to reclaim balance … Europe will be struggling internally, large numbers of refugees washing up on its shores and Asia in serious crisis over food and water. Disruption and conflict will be endemic features of life. Once again, warfare would define human life."
"Climate change acts as a threat multiplier for instability … Unlike most conventional security threats that involve a single entity acting in specific ways at different points in time, climate change has the potential to result in multiple chronic conditions, occurring globally within the same time frame. Economic and environmental conditions in these already fragile areas will further erode as food production declines, diseases increase, clean water becomes increasingly scarce, and populations migrate in search of resources. Weakened and failing governments, with an already thin margin for survival, foster the conditions for internal conflict, extremism, and movement toward increased authoritarianism and radical ideologies. The US may be drawn more frequently into these situations to help to provide relief, rescue, and logistics, or to stabilize conditions before conflicts arise."
"When a government can no longer deliver services to its people, ensure domestic order, and protect the nation’s borders from invasion, conditions are ripe for turmoil, extremism and terrorism to fill the vacuum … the greatest concern will be movement of asylum seekers and refugees who due to ecological devastation become settlers."