"My captors are fiercely patriotic. They believe in a strong united Iraq looking after its own destiny," Wood said on the tape.
Wood's wife, Pearl, confirmed the man was indeed her husband. A militant group calling itself the Shura Council of the Mujahedeen of Iraq claimed responsibility for the kidnapping.
The British Foreign Office also said three arrests in the abduction of Margaret Hassan, a British aid worker believed slain last year, saying they were made on Sunday morning during a coalition raid 30km south of Baghdad.
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