The North Korean Embassy in Berlin is a gray, monolithic office block notable only for the tall surrounding fence, red-star flying from a flagpole in the courtyard — and its prime real-estate location.

One block from the Friedrichstrasse shopping district and a two-minute stroll from the onetime Cold War border crossing known as Checkpoint Charlie, the downtown delegation is a legacy of relations established when eastern Germany was communist.

Its counterpart in Pyongyang, housed in a massive building that was taken over by reunited Germany in 1991, serves as a European outpost with a regime that's defying President Donald Trump with missile tests, prompting warnings of war.