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Pope Benedict has become the first Pope in 600 years -- and only the second ever -- to resign the post. He says he doesn't have the strength "of mind and body" to continue in the job.

Is this a pragmatic decision by an old man? Or are there some jobs you just can't quit?

Has he done a good job as Pope? Or do scandals in the Church - child abuse, Vatileaks - make this the right time for him to go?

Rachel Burden takes your calls live from St Peter's Square in Vatican City.