According to Vox, Russia has an arsenal of approximately 6,000 nuclear warheads.
Putin said he gave the order because "[t]op officials in leading NATO countries have allowed themselves to make aggressive comments about our country," according to CNN.
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On Feb. 19, just a few days before the invasion began, Putin made a similar show of nuclear strength when he ordered drills involving nuclear-capable ballistic and cruise missiles, bombers, and warships.
BBC reported Sunday that Russia has faced bank runs as sanctions and limits on its access to the international financial intermediary system SWIFT threatened the nation's export-heavy economy.
Russian planes have been banned from flying over the European Union, Canada, and the United Kingdom, The New York Times reported Sunday.
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