No sex or nudity of a sexual nature.

None seen onscreen, though many violent scenes are described in vivid detail by the children.

None.

There are a few scenes with adults smoking cigarettes, but it was not focused on.

There are several scenes where the orphaned children describe what happened to their parents and siblings when they were captured by rebels. The descriptions are horrifying, and though you don't 'see' the events narrated, the imagery is menacing. In one scene, a girl visits the place where her father was buried and falls on top of his grave crying and screaming loudly, which was disturbing.