The Russian base was built using new construction technologies as part of Kremlin efforts to bolster the military amid spiraling tensions with the West following Russia's 2014 annexation of Ukraine's Crimean Peninsula.
The Royal Netherlands Air Force and Royal Danish Air Force will send their F-35s to Luke over the next two years, and their pilots will train alongside U.S. Air Force F-35 pilots.
Denmark and its autonomous Arctic island of Greenland have signed an agreement to clean up U.S. military installations that were left to rust in the pristine landscape after the Cold War.