During the NATO summit in Wales in 2014, the alliance decided to conduct several high-profile military exercises in the coming years. Exercise Trident Juncture was one of these exercises, and the first edition was held in Portugal and Spain in 2015. NATO also decided to conduct a second Trident Juncture, planned to be held in 2018. The Norwegian government offered to host the exercise, and NATO accepted Norway's offer in 2015. The main part of the exercises took place in the central and eastern parts of Norway, in the counties of Trøndelag, Hedmark and Oppland.