Climate change success needs rich states to fulfil promises

In 2009, the world’s rich countries pledged to mobilise €100bn a year by 2020 to help poor countries tackle climate change. Since then, that promise has come to be regarded as a key test of the developed world’s resolve to do its part in the fight against global warming.
Reaching the €100bn target is important. Poor countries must believe that rich countries will honour their pledges. Otherwise, the prospects for an effective international agreement at the United Nations climate change conference in Paris in November and December could be at risk.