BORIS JOHNSON burbled yesterday that he “could have been clearer” when he blurted out claims that could keep a British mum locked up in an Iranian jail for an extra five years.

The Foreign Secretary told MPs that Nazanin Zaghari-Ratcliffe, who has been convicted of trying to overthrow the government, was in Iran to teach journalism.

Ms Zaghari-Ratcliffe has denied the charges, insisting she was only in the country so that her daughter could meet her grandparents.