Brian Stewart's regular Tuesday commentary looks at Russia's latest battlefield decisions that show an invader in a combination of retreat and brutal attack. But first some thoughts on what the CBC might learn from the BBC's assessment of where it is after 100 years. And an end bit you will find interesting, and maybe rewarding!

Hosted by Simplecast, an AdsWizz company. See pcm.adswizz.com for information about our collection and use of personal data for advertising.