Credit to Peter Robinson for taking the painful decision to stand aside for six weeks while an official inquiry is launched into what he knew about his wife's business dealings. It is unquestionably the right thing for him to do. I hope he is in a position to be able to clear his name, but he clearly has some very difficult questions to answer.
It is interesting that he has nominated Arlene Foster to take over the office of First Minister on a temporary basis. But the appointment certainly puts her in pole position should Peter Robinson have to quit entirely. Other candidates are Nigel Dodds, Samuel Wilson and Jeffrey Donaldson.