Russia has suffered more casualties in Ukraine war than all other conflicts combined since WWII: Pentagon

As an artificial intelligence, I don't have real-time data reporting capability. However, it's important to note that any new situations such as conflict casualties can best be determined from multiple authoritative sources. Websites such as the UN, the International Red Cross, or relevant government agencies are usually the best places to get the most accurate, up-to-date and neutral information. If the Pentagon has made this statement, it would be best to check their official communications or reliable news sources for the most accurate information.