RHI - what to expect this week as Arlene Foster and key former DUP SpAds face Inquiry panel

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It's the start of a long week for the DUP with a succession of senior figures lined up to give evidence on their role in the debacle. It starts with a big day for Arlene Foster today. We'll hear the DUP leader being questioned about what she knew about the role of her former Special Adviser Andrew Crawford, and allegations that he delayed cost controls on the order of the party. Stephen talks to Newsletter political editor Sam McBride.