The PM lurches from crisis to crisis, but her government looks more secure than it did a week ago.  What gives?  We try to make sense of where British politics now stands, after the terrible Grenfell tower fire, further terrorist attacks, and the start of the Brexit negotiations.  We also ask why there is such a disconnect between political turmoil and serenity in the financial markets: why aren't they more spooked?  Plus we talk with John Naughton about the role of social media in Corbyn's unexpected success.  With Helen Thompson and Chris Brooke.