Close study is often required to divine the meaning of Martin Rowson’s elegant cartoons in The Guardian. Nobody said it was easy. In this week’s illustration Martin’s point was sharp as a crystal dagger. The premiers of the UK and Scotland are standing on the rooves of grid-locked ambulances waiting outside hospitals as the placards of protesters poke up around them. “Um… fancy an easy culture war instead?” Rishi Sunak shouts across to Nicola Sturgeon?”. “You’re on!”, the first minister replies.