Complex sentence: It also states that in 1964, the 85-year-old Joseph Stalin is still alive and leading a Soviet Union rump state similar to the version in the novel in an endless guerrilla war against Germany.
Split into simpler sentences: It also states that in 1964, the 85-year-old Joseph Stalin is still alive and leading a rump Soviet state similar to the version in the novel. Also as in the novel, the Soviets are locked in an endless guerrilla war against Germany.