According to Linus Pauling, Einstein later regretted signing the letter because it led to the development and use of the atomic bomb against civilian populations, adding that Einstein had justified his decision because of the greater danger that Nazi Germany would develop the bomb first.
Einstein later regretted signing the letter because it led to the development and use of the atomic bomb against civilian populations, adding that Einstein had justified his decision because of the greater danger that Nazi Germany would develop the bomb first. This was according to Linus Pauling.