Warning to the West, by Alexander Solzhenitsyn

This book consists of four speeches and one BBC interview given by Solzhenitsyn to American and British audiences during the mid 1970's.  In them, he talks about his observations about dangerous tendencies in Western culture and intellectual climate that could lead to weakness and lack of preparedness to face the Communist threat.  Among them are the West's refusal to recognize the true nature of Communism despite straightforward exposition of it, lack of moral clarity, a materialist view of the world and of human nature, unwillingness to take a strong stance against the threat, and lack of interest in the plight of its victims.  He also points out some trends in the culture of that time (which are still trends today) that mirror conditions in imperial Russia before the Revolution.

I think this book is still very relevant today because even though the Cold War is over, we're not through with totalitarian movements yet, as can be seen in the destructive Islamist movements in the Middle East.  Solzhenitsyn points out that the temptation to create heaven on earth no matter what the cost is a recurring theme throughout history, and we must be in constant vigilance to guard against it.