RHI scandal - rift between DUP and Sinn Fein deepens #BBCNolan

It's been another dramatic week around the Renewable Heating Incentive crisis. The DUP's plan to reduce the projected £490 MILLION cost of the scheme to "zero" has been dismissed by Sinn Fein after clear the air talks between Economy Minister Simon Hamilton and Finance Minister Máirtín Ó Muilleoir. He called it a "sticking plaster" and issued the starkest warning yet that Stormont will fall if First Minister Arlene Foster does not stand aside. Vinny talks to BBC Political correspondent Enda McClafferty, Professor of Politics at the University of Liverpool, Jon Tonge, co-author of an award winning book on the DUP and former MLA Seamus Close.