The cost of war for Russia is “puny”

According to The Economist, the impact of the ongoing war on Russia's budget is relatively small, amounting to only around 3% of its GDP. It further suggests that at this current rate, Russia could sustain the war indefinitely.

"Russia's economy is holding up much better than almost anyone expected."

https://www.economist.com/graphic-detail/2023/05/30/how-much-is-russia-spending-on-its-invasion-of-ukraine