The correct answer to this question is the following.
Unfortunately, you forgot to include the posters. Without them, we do not know what is their content or what they depict about Stalin.
However, trying to help you, we can comment based on our knowledge of the topic.
There were many posters elaborated by his propaganda office in Moscow during his time as the leader of the Soviet Union.
In general terms, these propagandistic posters depict Stalin as a great, confident leader, always in control. He was depicted as the father of the nation, the right kind of leader to conduct the destiny of the Soviet Union, as a well-respected leader, and the leader the Soviet people loved.
That was his propaganda and during those World War II times and further Cold War years until his death, it served the purpose to portrait Stalin as the greatest leader the USSR always needed.
Of course, that was from the perspective of the Communist government. Because from the outside, Joseph Stalin was a totalitarian dictator.