Putin has relied on historical borders to argue Ukraine is part of Russia and to justify the war.
Mongolia's former president shared a map of the Mongol Empire, which included parts of Russia.
"After Putin's talk. I found Mongolian historic map. Don't worry. We are a peaceful and free nation," he wrote.
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The former president of Mongolia mocked Russian President Vladimir Putin over the weekend and his focus on history to try to justify his invasion of Ukraine.
Putin has frequently used historical borders to rationalize his brutal invasion, arguing that Russia has a claim over Ukraine even though Ukraine is an independent country.
In his interview with the former Fox News host Tucker Carlson last week, Putin outlined centuries of Russian and European history. Historians say much of the history he gave doesn't stand up.
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