Sudan has signed a ceasefire with a major Darfur rebel group, the second deal in recent weeks. Liberation and Justice Movement (LJM), a newly formed umbrella group of 10 movements, signed the framework deal paving the way for further talks. <br/><br/>Last month, a similar deal was closed with the Justice and Equality Movement (Jem), the biggest single rebel group. In the past the existence of many small factions has hampered peace talks. <br/><br/>Now, the only major group still holding out against the government is a faction of the Sudan Liberation Army led by Abdul Wahid, who has refused to take part in peace talks.<br/>