what do you think about the so-called third period of comintern?

Do you think it is appropriate to argue that main difference btw the comintern line and the left communists at the time was that LCs believed the period was not revolutionary anymore wheras comintern argued it was?

In terms of russian politics, do you think this was a policy directed mainly towards weimer republic? Do you think the aim of the USSR between 1928 and 1933-34 was to attack social democrats and take Germany to a pro-Russia line?

Still, do you think that the unintentional result of this line could be considered as a radicalization of the CP rank-and-file cadres towards a militant but vain struggle in countries like US or Britain?