Collective defence - Article 5

NATO's exercise Trident Juncture 18

The live training will be conducted from 25 October to 7 November 2018.

https://twitter.com/DefenceHQ/status/1038090807843139587

https://www.nato.int/cps/en/natohq/topics_110496.htm

https://forsvaret.no/exercise

The dates are an interesting time period…for the USA.