>> how are you feeling in this moment being back in washington again? >> my feeling being here is a feeling of a bit of disappointment, and at the same time frustration because after everything that i've done in order to expose what the regime has done we have yet to see any real action. >> his code name is caesar. he was a military photographer when the war began in 2011. he said he immediately realized what he was then documenting were not accidental death, but torture. >> for example, many of the bodies had their eyes gouged out. most of these bodies had very deep cuts. most of them were emaciated, starved for many, many months and also marks all over their bodies from head to toe and i would see their jaws and teeth broken. >> instead of defecting right after the war broke out, caesar says he decided to stay for two