Background information: This passage comes from the memoirs of US President Harry S. Truman, who made the decision to use the atomic bomb. Which of these statements best expresses President Truman’s feelings in this passage? He regretted his decision to drop the bomb on Japan. He believed that using the bomb was absolutely necessary to end the war. He was undecided about whether to use the bomb, but was talked into it. He made the decision on his own, without input from US Army advisors.