With 35,000 troops from around 30 nations, exercise Trident Juncture 2018 in Norway will be an important milestone for NATO. Renewed focus on the alliance's core, collective defence, will be key.
"NATO needs to hold exercises on a large scale. Only this way are we able to test all the levels in the alliance: From the troops on the ground and all the way up to a strategic level", says General Denis Mercier, Supreme Allied Commander Transformation (SACT) in NATO.
The French General thinks Norway will be ideal for an exercise on this scale.
"The cold climate also brings extra challenges for the soldiers, that hones their skill."
For many years, NATO has been occupied with international conflicts, but recent developments have led to a renewed focus on the core of the alliance.
"Collective defence and training for this will be key. This is one of NATO's core missions and we will spend more time on this in the future", says general Denis Mercier.
The General underlines the importance in focusing on the core mission: NATO as a defensive organisation.
"Deterrence is key for NATO. With large-scale exercises we can demonstrate our capacity and uphold our credibility."