Saudi Arabia, the world’s largest oil exporter and a long-time thorn in the side of the climate-change movement, will sign onto Irena’s founding treaty “within a matter of weeks”, according to Irena director-general Hélène Pelosse.

South Africa joined Irena over the weekend in a turn of events Pelosse describes as “very, very important”. Of the so-called BASIC industrialising countries integral to the Copenhagen Accord – Brazil, South Africa, India and China – only India was a signatory.

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