The idea that a war can be won by standing on the defensive and waiting for the enemy to attack is a dangerous fallacy, which owes its inception to the desire to evade the price of victory.
People's lives are in the care of the railways when they get on a train. The railways should remember that.
Our enemies can deal a blow to us any time they wish. They did not wait for permission to do this. They do not deal a blow with prior notice. They do not take action because they can't.