World leaders have vowed to seek a comprehensive climate deal at an upcoming UN conference in Paris, a draft statement seen by AFP said Monday. 

"We affirm our determination to adopt a protocol, another legal instrument or an agreed outcome with legal force," at the COP21 talks, the statement said after officials negotiated through the night on the text of the statement.

"We reaffirm the below 2C degree climate goal..," the draft statement added.