#Marr: Can you guarantee you won’t stand against PM?

Boris Johnson: I guarantee I will give you a sensible plan…

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— BBC Politics (@BBCPolitics) December 9, 2018

“Can you give me an absolute categorical promise here and now that you will not stand against Theresa May?”

“I will give you an absolute categorical promise that I will continue to advocate what I think is the most sensible plan to get out of this mess.”