Russian rates are 16% and the ruble is down 40% and still sinking.
The US is $200,000,000,000,000 debt/unfunded obligations and is borrowing at 4.5%.
Who can’t afford what?
The proximate cause of the invasion in 2014 and 2022 was the doubling of the price of oil in 2013 and 2021.
Russia had hight interest rates before the war began.