In justification of the crucifixion of Czechoslovakia at Munich it was said that [the Soviet Union] could not be trusted and that her assistance would not be worth much in any case. On the points there could be honest difference of opinion, but not about the diplomatic record. Certainly the Czech Government did not doubt [the Soviet Union]'s sincerity. At a session of the Harris Institute at the University of Chicago in August 1939 I asked President [of Czechoslovakia] Benes whether [the Soviet Union] would have supported him had he decided to fight in September 1938. He replied, without an instant's hesitation: "There was never any doubt in my mind that [the Soviet Union] would aid us by all the ways open to her, but I did not dare to fight with [Soviet] aid alone, because I knew that the British and French Governments would make out of my country another Spain."

Denna F. Flemming; The Cold War and Its Origins, 1917-1960; Vol 1, 1917-1950; Page 84

All the [the Soviet Union] is just replacing Russia (the author likes using Russia instead of SU), it changes the quote in no way.