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UN envoy to Libya calls for unity government as he opens Geneva talks with warring factions

Bernardino Leon, Special Representative of the Secretary-General for Libya and Head of the United Nations Support Mission in Libya (UNSMIL), informs  the media before a new round of political dialogue that seeks to end Libya's deepening political and security crisis during a press conference at the European headquarters of the United Nations in Geneva, Switzerland, Wednesday, Jan. 14, 2015.  (AP Photo/Keystone/Salvatore Di Nolfi)

Bernardino Leon, Special Representative of the Secretary-General for Libya and Head of the United Nations Support Mission in Libya (UNSMIL), informs the media before a new round of political dialogue that seeks to end Libya's deepening political and security crisis during a press conference at the European headquarters of the United Nations in Geneva, Switzerland, Wednesday, Jan. 14, 2015. (AP Photo/Keystone/Salvatore Di Nolfi)  (The Associated Press)

The U.N. envoy to Libya is calling for a unity government as he opens meetings in Geneva with the country's warring political factions, warning they shouldn't miss the opportunity for peace.

Bernardino Leon said Wednesday the talks are the start of a long process. One of Libya's two rival parliaments won't even decide until Sunday whether to participate.

Libya has been mired in its worst fighting since Moammar Gadhafi's regime was overthrown in 2011. Two rival governments are each backed by an array of militias.

Leon said: "The general impression is that the country is very close to total chaos and that, if they miss this opportunity, it's very difficult to imagine that there will be a situation in the country that will allow easily to start a new process."