Thailand cave rescue: Mission to save boys under way

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Rescuers in Thailand have begun a hazardous operation to lead 12 boys and one adult out of a cave where they have been trapped for two weeks.
The group are stranded on a ledge 4km inside the Tham Luang cave but amid fears of rising waters, officials have decided they cannot wait any longer.
Expert divers who have been keeping the group supplied since they were found last week will guide them out.