Brexit backstop furore: what's going on and can the PM stay in control?

The EU is waiting, while in Westminster every policy wrangle becomes a new front in an internal Tory culture warAfter the week she’s had, Theresa May could be forgiven for finding discussions at this weekend’s G7 summit in Québec – which could take in disarming North Korea, preventing a catastrophic trade war between the world’s economic superpowers;, and taming Iran’s nuclear ambitions – reassuringly straightforward.The past few days in Westminster hav