On Monday a report in Der Spiegel said Germany's Finance Minister Wolfgang Schaeuble compared Russia's seizure of Ukraine's Crimea region last month to Nazi aggression in Czechoslovakia on the eve of World War II.
The Russian foreign ministry said in a statement that such historical parallels were "unacceptable" and that it had handed Germany's ambassador to Moscow, Ruediger von Fritsch, an official complaint over the matter.
"We consider such pseudo-historical digressions by the German minister to be provocative," the Russian ministry said.
Schaeuble yesterday denied having compared Crimea's annexation to that of the mainly ethnic German Sudetenland by Nazi Germany.
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Schaeuble did not deny making the controversial remark but added: "The next sentence was 'we do not compare'".
He said the media reports on the ministry event where he had spoken and the fact that "half a sentence was reported out of context" were "not serious".
The German-speaking part of Bohemia, the Sudetenland, was ceded to Germany in 1938 before the outbreak of World War II when the Czech part of Czechoslovakia was occupied by the Nazis and Slovakia became a puppet state.