HARARE, Aug 29 (Reuters) - Zimbabwe's main opposition MDC said on Friday it would not sign a power-sharing deal with the ruling ZANU-PF in its current form.

MDC spokesman Nelson Chamisa said it was "ridiculous" for the ruling ZANU-PF to insist on MDC leader Morgan Tsvangirai's signature without addressing "deficiencies" in the proposed agreement in terms of executive powers.

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