That's because I write that Stalin genuinely wished to be useful to his country, but judging by the results of his mistakes, the fruits of his - and the country's - pre-war labor were lost.
Eso es porque escribo que Stalin genuinamente quería ser útil a su país, pero juzgado por los resultados de sus errores, los frutos de su labor -y la del país- antes de la guerra se perdieron.