It's easy to let political differences and political partisanship obscure the true enormity of Szilard's accomplishments. He managed to convince the United States to invest an enormous amount of time and effort in developing an untried weapons technology - despite divided scientific opinion. He was that sure of his physics and that forceful in presenting it. That's what the first document is about.
The second details the development of the man's moral approach to atomic weapons.
The third is an overview of his life and achievements.
Sorry to be so slow but this research takes time - more time than a real-time conversation allows.