Foster questions existence of 'no-confidence' letter Published image copyrightReuters image captionArlene Foster is due to step down as DUP leader on Friday and as first minister at the end of June Outgoing First Minister Arlene Foster has said she is beginning to wonder if the DUP's "so-called" letter of no-confidence in her exists. Mrs Foster said she still had not seen the letter which initiated the internal process that resulted in her resignation as leader. Mrs Foster is due to step down as DUP leader on Friday and first minister at the end of June. She said she had still not spoken to her successor, Edwin Poots.