Tripoli (AFP) - World leaders and the United Nations urged Libya's warring parties Friday to sign a proposed peace deal installing a national unity government, after a cool response from some lawmakers in the country's rival parliaments.Libya has had two administrations since August last year when a militia alliance that includes Islamists overran the capital, forcing the internationally recognised government to take refuge in the east.The new government proposed by UN envoy Bernardino Leon would be headed by Fayez el-Sarraj, a deputy in the Tripoli parliament, and include three deputy prime ministers, one each from the west, east and south of the country."There is no more time to waste," said a joint statement released by the governments of Britain, France, Germany, Italy, Spain and the United States."Delays in forming a unity government will only prolong the suffering of the Libyan people and benefit terrorists seeking to take advantage of the chaos."The UN Security Council also unanimously called on all stakeholders in the country to support the deal and reiterated it was "prepared to sanction those who threaten Libya's peace, stability and security or that undermine the successful completion of its political transition."The country descended into chaos after the fall of Moamer Kadhafi in 2011, with the two sides vying for power as well as several groups battling for control of its vast resource wealth.Sarraj, a graduate in business management, has been involved in dialogue that tried to bring together the various actors of Libyan society to end the crisis."After a year of work in this process, after working with more than 150 Libyan personalities from all the regions...