North Korea resolved a major flaw in one of its missiles after it let Russia use them against Ukraine, Kyiv's spy chief says
Kyrylo Budanov said Russian use helped to modify the KN-23, one of North Korea's newest ballistic missiles, to fix poor ...
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How Britain's Secret Decoy Ships Outfoxed German U-Boats During World War I
World War I was raging off the British Isles when the German submarine UC-18 surfaced to attack easy prey on the chilly ...