Mexico's climate negotiator issued a tearful plea Friday to UN colleagues to put aside their differences for a global pact, as a superhurricane headed for his country.

"In about four hours, Hurricane Patricia will hit the Mexican coast," Roberto Dondisch said at the closing session of a fraught round of negotiations in Bonn. "I don't think I need to say more about the urgency to get this deal done."

"I ask you all to put aside your differences so together we can start working."