Did you manage to put them in the Comintern? What about Turkey?
I spent a whole game trying to get Turkey to join Comintern. As Soviets, I put spies to flip them ideologically. Commies lost the election despite having a tiny majority.
Restarted. Now I added commie ideology and did a coup on them. Sent volunteers and won the civil war. Guess what? Commie Turkey still wouldn't join commintern!!!
I tried everything possible. In the end decided to wait till world tension raised near 100%. Then commie turkey started doing neutrality focuses which killed any chance of them joining my faction.
Restarted. Now I'm pissed off. This time I'll just attack them at the same time I attack Finland in winter war. Finland is a war in the park, so I hope to have a real challenge for a change in Turkey and after the war I'll puppet them and make them join commintern. I am using the war goal from the focus tree for turkey. Let's see.