"We have a credibility problem all of us: We're talking and we're starting to act but we're not doing enough," Gore said during a speech at the opening ceremony of the summit.

"We must see the so-called 'dash for gas' for what it really is: a dash down a bridge to nowhere, leaving the countries of the world facing climate chaos and billions in stranded assets, especially here in Africa.

"We have to move beyond the era of fossil fuel colonialism."

Australian Associated Press