The hack of the federal court filing system, first reported by POLITICO last week, was allegedly carried out in part by Russian hackers.

Fadeev also said Russia's stance on ending the war in Ukraine has not changed since Putin laid out his conditions last year: the full withdrawal of Ukrainian troops from parts of the Ukrainian regions of Donetsk, Zaporizhzhia and Kherson that they still control, and Ukraine abandoning its plans to join the NATO alliance.

For most of his quarter-century rule, President Vladimir Putin visited places like Paris, London, Vienna and New York.