The Truths We Hold, by Kamala Harris: on Energy & Oil

Kamala Harris: Climate change is a national security threat to America

For example, climate change will lead to droughts. Droughts will lead to famine. Famine will drive desperate people to leave their homes in search of sustenance. Massive flows of displaced people will lead to refugee crises. Refugee crisis will lead to tension and instability across borders.

The hard truth is that climate change is going to cause terrible instability and desperation, and that will put American national security at risk. That's why as part of President Obama's national security strategy, climate change was identified as a national security threat of the highest priority.