Wadanda suke da cikakkiyar masaniya kan abin da yake faruwa a kasar Libya suna bayyana cewa, ‘yan ta’addan da suke rike da birnin sabrata sun hada har da wadanda Amurka take zargi da kai hare-hare kan ofishin jakadancinta a Benghazi, tare da kashe jakadanta Chris Stevens a cikin watan Mayun 2012.