No matter what your clame is, if the author doesn't make a statement that reveals the point of the argumentative essay and what is going to be spoken about with a firm debatable affirmation, there's no claim to be used at all. You have to be on some side of the subject to make an argumentative essay, since you're going to try to convince people to think like you do. The argument must show what you think about the subject. That's the whole point.
This passage is meant to invoke a sense of national unity towards a common enemy. Wars are often seen as uniting in the sense that they bring people in a nation together.
