The investment is the latest in Denmark's multibillion-dollar spending spree amid Trump's threats to acquire Greenland.

Copenhagen faces up to Russian threat on Nato’s eastern flank and US pressure on Greenland with big defence deals

Denmark will buy US F-35 fighter jets and new ships to defend Greenland - a resource-rich Danish territory that President Trump wants to control.

The investment is the latest in Denmark's multibillion-dollar spending spree amid Trump's threats to acquire Greenland.