The new chief prosecutor for the International Criminal Court has been sworn into office in a ceremony at The Hague.
Former Gambian justice minister Fatou Bensouda is the first African to hold the post.
She takes over from Luis Moreno Ocampo of Argentina, who is stepping down after nearly a decade in office.
Ms Bensouda has spent the past eight years serving as Mr Moreno-Ocampo's deputy.
She praised the work conducted by her predecessor and promised to make the victims of crime her priority.
A BBC correspondent says Ms Bensouda has a reputation for controlled calm and sensitivity, which may well have helped her win the job.