UN climate talks moving at snail's pace, says Ban Ki-moon

Pace of negotiations for a climate deal in Paris later this year is too slow, says UN secretary general, as China says it will shortly submit its carbon pledge

Negotiations for a deal to fight climate change were moving at a "snail's pace", the United Nations chief, Ban Ki-Moon, told a high-level meeting on Monday.

A promise from China - the world's biggest carbon polluter - for ambitious cuts to greenhouse gas emissions "very soon" could inject some much-needed optimism into the talks.