Angelina Jolie has said a summit on sexual violence in conflict must send a message around the world that there is "no disgrace" in being a survivor and that "the shame is on the aggressor".
The Oscar-winning actress dedicated the four-day London event to an unnamed and "abandoned" victim of rape in Bosnia.
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The position, posted on the British Monarchy website, pays £16,000 a year for 20 hours a week.
The parents of missing 15-year-old Bristol schoolgirl who is believed to be heading to Syria have urged her to come home.
I think it is fair to say that was the best speech I have seen David Cameron give in the decade I have been reporting on him.