and I meant: “concerns were raised within the Soviet high command that an invasion of Hokkaido would be impractical and unlikely to succeed” Sure, there was a

and I meant: “concerns were raised within the Soviet high command that an invasion of Hokkaido would be impractical and unlikely to succeed” Sure, there was a huge political part at play and I don't deny it, but even abstracting the US, purely militarily speaking, the Soviets would have been hard-pressed to succesfully invade Japan mainland.