"Competition for vital natural resources, in particular water, may further intensify in many parts of the world as a result of changing weather patterns. This is likely to lead to increasing local and regional strife," he said.
While all countries must tackle climate change, industrialised nations have a historical responsibility for the greenhouse gases already in the atmosphere, Vanhanen told a press conference during a visit to Tokyo.
"It is the developed world that has to lead by example," he said. More >>>