Imperialist wars are waged to conquer lands, peoples, territories. Gangster wars are waged to remove competitors. In gangster wars you issue an obscure warning, then you smash the windows or burn the place down.
Gangster war is what you wage when you already are the boss and wont let any outsider muscle in on your territory. For the dons in Washington, the territory can be just about everywhere, but its core is occupied Europe.
By an uncanny coincidence, Joe Biden just happens to look like a mafia boss, to talk like a mafia boss, to wear a little lopsided half smile like a mafia boss. Just watch the now famous video:
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