Jeremy Corbyn, or indeed anyone sufficiently prominent, needs to go to Tehran and refuse to leave without Nazanin Zaghari-Ratcliffe. I tried to get George Galloway to do this, back before he blocked me for being insufficiently deferential to Laura Pidcock. But George would not do it. Nor do I see Laura doing it, not even during the current parliamentary recess. You know what you have to do, brothers and sisters. You know what you have to do.