A reliable published source should be found for this before moving it into the article.
The fact that atomic war may break out, isn't that class struggle? There is no alternative to class struggle. This is a very serious question. The be-all and end-all is not peaceful coexistence. After all, we have been holding on for some time, and under Stalin we held on to the point where the imperialists felt able to demand point-blank: either surrender such and such positions, or it means war. So far the imperialists haven't renounced that.