A coalition of Western nations have confirmed they are willing to supply modern-made battle tanks to Ukraine. In modern warfare tanks are a key element for offensive operations to punch through enemy lines and retake territory. They provide mobile firepower, protection, shock and surprise. Concentrated in numbers, they can dislocate an enemy's defences. But they also need the support first of artillery to weaken those defences and then of infantry to hold retaken ground. History shows tanks alone don't win battles. As western nations give the go-ahead to send tanks to Ukraine, let us pray that Russia's response will not lead to even more deaths of innocent civilians.