https://warontherocks.com/2019/12/w...higher-than-commonly-understood-as-is-chinas/
Perhaps most importantly, the more methodologically sound approach to comparing defense spending based on PPP illustrates that the gap between U.S. expenditure on the one hand and that of Russia and China on the other has closed dramatically over the past 15 years. Today, when taken together, spending by Russia and China is roughly equal to U.S. defense expenditure, with Russia representing a much larger share than previously recognized.