order to expose what the regime has done, we have yet to see any real action. >> reporter: his code name is caesar. he was a military photographer in damascus when the syrian warp beg -- warp began in 2011. >> many this their eyes gouged out and most bodies had very deep cuts. most of them were starved for many, many months and marks all over their bodies from head-to-toe and i would see their jaws and teeth broken. >> reporter: instead of defecting right after the war broke out, caesar says he decided to stay for two and a half years to bear witness, collect evidence, and to expose who was really happening in his country. where any sign of the simp thym of the dead could be used as betrayal. >> i would hours with the