That's a softball a kid could hit. After about twenty years of the war Obama said could be won, we "cut and run" in a most spectacular manner courtesy of the Resident of the White (Powder) House. Soviets lost to goat herders. We lost to goat herders. Yup.
It helps to read what I was responding to, which is the statement russia cannot lose in Ukraine. Of course we have lost wars, its just idiocy to say russia cannot lose in Ukraine.