I’m sure Putin is quaking in his boots
The Biden-Obama sanctions on Russia for invading Ukraine and taking Crimea were meaningless, costing Putin only $3 billion per year, only 0.2% of their economy.
Remember, this is after a signed agreement, including the US, that guaranteed Ukrainian border integrity.
Putin retains the Crimea. Putin has been occupying Eastern Ukraine.
Unlike the Trump administration, the Obama-Biden administration refused to provide lethal aid to Ukraine and the Biden administration had until just now, withheld lethal military aid from the Ukraine.
https://sgp.fas.org/crs/row/R45415.pdf
https://www.brookings.edu/blog/order-from-chaos/2018/03/05/dont-rehabilitate-obama-on-russia/amp/