>> jolani: >> smith: his name is abu mohammed al jolani. as a former al qaeda leader, the u.s. has a $10 million reward for information leadinto his capture. he heads the organization for the liberation of the levant, hay'at tahrir al sham, the most powerful islamist faction in syria. he has agreed to meet because he is trying to overhaul his image. >> not much is known about its leader, abu mohammed al jolani. he joined al qaeda... >> smith: in the past, he's battled americans in iraq. he's deployed suicide bombers in syria. and to this day, he stands accused of imprisoning and torturing his critics. (siren blaring) you're, you're recognized, you're designated as a terrorist by the united states, by the united nations, by many governments. what do you say to them? >> jolani: >> smith: we sat down together in a secure location in idlib province in northwest syria. he insists that today, americans should trust him. you pledged allegiance to al qaeda. you worked with abu bakr al baghdadi, the emir of isis. so for you to say that you were not

. >> jolani: (loud explosions) >> and we're seeing a