First of he said
Which is rich in its own right.
But what I said with regards to 1950 where I think you did not get my point.
During that era after WW2, the reason why countries like Yugoslavia, Hungary, Albania, Romania, Bulgaria joined the USSR. Is because they had an organized group of communists which were a majority part of the local resistance against the Nazi's. So after the WW2 those who were in the resistance got to power. This is why the East block turned Red.
Turkiye at that time had no such problem. And thus Stalin's army would have to fight in a terrain which was unfamiliar to theirs and we saw how that ended up a.k.a as Finland. And the deeper Stalin would like to go into Anatolia, The more equipment and manpower losses it will get, because Turkiye does not have the terrain which is suitable for their way of warfare. Also in literature the soviets planned to avoid a direct confrontation with Iran and Turkiye(besides the straights) probably for these reason, so instead they worked on educating subversive elements for those countries to make the country turn red in time and from within.