"Germany expropriated some $550m in gold from foreign governments, including $223m from Belgium and $193m from the Netherlands." Wikipedia.
"Austria was the first victim of Nazi aggression in the spring of 1938. Because of his close relations with the Bank for International Settlements, which he had helped start, Schacht knew that the Austrian central bank had about 100 tons of gold. That was almost four times as much as the Germans had at the time. When the Wehrmacht marched into Vienna on Saturday morning March 12, Wilhelm Keppler, a businessman and early Hitler backer, and two armed Nazi commandoes arrived at the Austrian Central Bank and took the Austrian gold to Berlin. The Germans forced the Austrian central bank to transfer an additional 5.7 tons that it had shipped to London for safekeeping.
The Nazis also demanded that Vienna’s large and wealthy Jewish community hand over to Berlin 14.3 tons of their private gold.
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When the Germans later invaded other European countries, one of their first stops was always the local central bank.
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The Nazis eventually captured some $600 million worth of gold.
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Without the stolen central bank gold, Adolph Hitler would have been an insignificant player in world history".
History’s Biggest Robbery: How the Nazis Stole Europe’s Gold - Wharton
Eu não sou historiador, nem conheço o tema em detalhe, mas assumir que os Gregos foram os únicos roubados desta forma é, no mínimo, original.