What is a question about this article? If the question is unanswerable, say "unanswerable".

For 36 years, NATO and the Warsaw Pact never directly waged war against each other in Europe; the United States and the Soviet Union and their respective allies implemented strategic policies aimed at the containment of each other in Europe, while working and fighting for influence within the wider Cold War on the international stage.

NATO and the US never waged what against each other?
unanswerable