Russia is said to have massed more than 67,000 troops on the Sumy-Kursk border, in a troop buildup that Ukrainian president Volodymyr Zelensky warned Could herald a Russian Spring Offensive. His Commander-in-Chief, Gen Oleksandr Syrskyi, says it has already begun. But how realistic is it to think Russia can mount any sort of offensive? It’s certainly a tall order for the Russians, having failed to take Sumy at the onset of the full-scale invasion, with the city since then transformed into a