Spiritual Warfare - some literature

Today, in America, as in the rest of the world, we are in the midst of spiritual warfare.

Besides the need to strive for a  sinless and holy life, we need to know our enemy, and we need to know the authority that we have as Christians.

Among the books I've read, and which have been recommended to me, are:

So, my brothers and sisters,
Repent, study, pray.
It's up to each of us to cooperate with the Holy Spirit in turning this nation around.