Collaboration is frequently not the soft option - and in this case it was one of the most difficult. It shows how it becomes impossible to keep a 'place at the table' if one is more focused on a positional stance than seeking a shared outcome. The adversarial and principled nature of a political issue like Brexit means that 'walking a way' is seen by those such as a Johnson and Davis as a tactic to help their cause. One wonders however, what would have happened had they met the challenge of staying at the Cabinet Table to try to influence and collaborate from within government?
Johnson's resignation came after Brexit Secretary David Davis and junior Brexit minister Steve Baker stepped down overnight, blowing apart May's claim to have finally united her squabbling government on the issue.