It’s certain that the atomic bomb is based on his theories; and, he participated in the writing of a letter directed to the president Franklin D. Roosevelt requesting the creation of an investigation program of the reactions in chain that accelerated the production of the atomic bomb. However, Einstein didn’t participate in the elaboration of this program.

Furthermore, he also wrote again to the president to try to persuade it of using the nuclear weapon.

Moreover, who is the real responsible for all damage caused by these bombs, scientists who designed it or people who used it?