Question: what does a nuclear bomb have in it

title: Nuclear weapon
text: In the late 1940s , lack of mutual trust prevented the United States and the Soviet Union from making progress on arms control agreements . The Russell -- Einstein Manifesto was issued in London on July 9 , 1955 , by Bertrand Russell in the midst of the Cold War . It highlighted the dangers posed by nuclear weapons and called for world leaders to seek peaceful resolutions to international conflict . The signatories included eleven pre-eminent intellectuals and scientists , including Albert Einstein , who signed it just days before his death on April 18 , 1955 . A few days after the release , philanthropist Cyrus S. Eaton offered to sponsor a conference -- called for in the manifesto -- in Pugwash , Nova Scotia , Eaton 's birthplace . This conference was to be the first of the Pugwash Conferences on Science and World Affairs , held in July 1957 .