David Davis says he can't support the latest Brexit negotiating plan set out by Prime Minister Theresa May.
It's leading to renewed speculation that Brexiteer MPs in her Conservative Party may try to remove her as leader - and therefore as Prime Minister.
Political reporter Theo Usherwood says it's a significant moment.
In: 'It does….
Out: …Minister."
Dur: 73 seconds
http://www.fsnradionews.com/feeds/0709brexit-usherwood1.mp3