Tone Skogen, Norway’s deputy defense minister, discusses lessons learned from NATO’s 31-nation Trident Juncture 2018 military exercise simulating an Article V defense of member nation in norther Europe, Russia’s behavior during the exercise and Moscow’s recent seizure of Ukrainian vessels and their crews, and the collision that sank the Norwegian frigate Helge Ingstad with Defense & Aerospace Report Editor Vago Muradian during the Reagan National Defense Forum at the Ronald Reagan Presidential Library in Simi Valley, Calif. Our coverage was sponsored by L3 Technologies and Leonardo DRS.