Introduction

Nicola Sturgeon has announced her retirement as Scotland's first minister. She'll stay on as an MSP until the next election, but the SNP will elect a new leader. Meanwhile at Westminster, Kia Starmer confirmed that former Labour leader Jeremy Corbyn won't be allowed to stand for re-election in 2015. We ask what that means both for the left and for a Conservative party that built its majority on promising to get Brexit done.