Has Theresa May finally exhausted her colleagues' patience?

Departure of ‘three amigos’ is a sign that Tory MPs may defy the whip in Wednesday’s Brexit voteTheresa May has emerged, battered but unbowed, from so many confrontations with one or other wing of her fractious party over the past two years that survival against the odds has become her best known political trait.But the dramatic departure of three MPs on Wednesday, to cross the floor and join eight ex-Labour colleagues on the opposition benches, sharpened the extraordinary risk