According to the ministry, the bombers were escorted by MiG-31 fighter jets, and spent over 13 hours airborne. The aircraft performed aerial refuelling.
"At certain stages of the flight, the Russian aircraft were shadowed by F-16 fighters of the Danish Air Force and the Norwegian Air Force," the ministry said in a statement.
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"All flights of the aircraft in service with the Russian Aerospace Forces are carried out in strict compliance with the international rules of the use of airspace,” the ministry stressed.