A total of 46 nations and 2.7 billion people are now at high risk of being overwhelmed by armed conflict and war because of climate change. A further 56 countries face political destabilisation, affecting another 1.2 billion individuals.
This stark warning will be outlined by the peace group International Alert in a report, A Climate of Conflict, this week.
Consider Peru, said Smith. Its fresh water comes mostly from glacier meltwater. But by 2015 nearly all Peru's glaciers will have been removed by global warming and its 27 million people will nearly all lack fresh water. If Peru took action now, it could offset the impending crisis, he added. But the country has little experience of effective democracy, suffers occasional outbreaks of insurgency, and has border disputes with Chile and Ecuador. The result is likely to be 'chaos, conflict and mass migration'.