In a nuclear war, millions of people exposed to fallout would be forced to flee their homes to neighbouring countries, in urgent need of shelter, uncontaminated food and water, and health care. The number of people seeking refuge would be unprecedented in history.

The use of multiple nuclear weapons would also severely disrupt international trade and telecommunications, and possibly result in global economic collapse, which would worsen poverty and set back human development goals by decades.

No nation and no individual is immune to the potential impacts.