Russian K7 Flying Fortress vs Nazi UFO Haunebu - Secrets & theories of WWII

Secrets and theories of World War II. The Russian K7 Flying Fortress was a project starting near 1929 and 1930 designed to be a giant sky fortress and create a perimeter in the skies to stop large quantities of aircraft before enter in Russian airspace, capable of bombing the Nazi underground bases in Antarctica and back, also counter the Nazi UFO, an disc shaped aircraft project in the Third Reich, codenames Haunebu, Rundflugzeug, Feuerball, Diskus, Haunebur