Richard Ratcliffe, the husband of the jailed British-Iranian dual national Nazanin Zaghari-Ratcliffe, has gone on hunger strike.

Mr Ratcliffe is taking the action outside the Foreign Office, which he says is not doing enough to secure the release of his wife.

Mrs Zaghari-Ratcliffe, who has been held in Iran for five years on spying charges, recently lost her appeal against a second prison sentence.

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