Boris Johnson has vowed to oppose Rishi Sunak's new Brexit deal for Northern Ireland in a crunch Commons vote later today.
The ex-Prime Minister will rebel against Mr Sunak's Windsor Framework - which overhaul's Mr Johnson's old Brexit deal governing Northern Ireland after years of deadlock.
Mr Johnson said the plan was "unacceptable" and argued that his own law-flouting Northern Ireland Protocol Bill was the best way to proceed.