US can actually issue sanctions against Putin's wealth estimated in the billions, can issue sanctions against Gasprom---meaning no access to US capital markets, can cut Gasproms access to money movements via NYC, and can limit 90 day lines of credit without asking Europe.
US can release oil out of the national reserves and rock the current sour oil markets which are at 95 USD down under the 90 range ---Russia recently stated they need 104 per barrel.
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