Protesters in Berlin last week chanted free the leopards. They're referring to Germany's prized military tanks, and they want them to Ukraine. So far, Chancellor Olaf-Schulz has been dragging his feet to talk about why I'm joined by our Europe editor Ben Hall. How helpful would Germany's leopard tanks be to Ukraine's war effort? There are about 13 European armies that operate a total of 2,000 leopard tanks.