Jihadists allied with the Islamic State claimed they are holding 21 Egyptian Christians captured near Tripoli. Islamist factions have postponed an announcement of whether they will attend UN-sponsored peace talks until Jan. 18. A suicide bombing at a checkpoint near Benghazi killed three Libyan soldiers and wounded two others. Internationally-recognized Prime Minister Abdullah al Thani called for international support of his government and warned of Libya becoming a sanctuary for terrorist groups.