Thank you, Internet. I learn something new every day.

en.wikipedia.org

Specifically, Article 2 of the treaty declares the two nations guarantee to adopt immediately all necessary measures to oppose any country or coalition of countries that might attack either nation.

The treaty is in effect and automatically renews every 20 years. It has renewed in 1981 and 2001. The most recent renewal will remain in effect until the year 2021.

I confess, I wasn’t aware of this treaty. That certainly ups the ante, to put it mildly.