Project Islero

Project Islero
Proyecto Islero
José María Otero de Navascués (second from left) and Guillermo Velarde, December 27, 1958
Active	1963–1981
Disbanded	1987
Country	Spain
Branch	Defence High Command
Type	Nuclear Weapons Project
Headquarters	Vandellós, Tarragona
Commanders
Notable commanders	Luis Carrero Blanco Agustín Muñoz Grandes Guillermo Velarde [es] Manuel Díez-Alegría

Project Islero was an attempted Spanish nuclear program. Created by Agustín Muñoz Grandes and Guillermo Velarde [es] in 1963, the project lasted from the middle stages of Francisco Franco's rule into the beginning of the democratic transition. Although the project never developed a nuclear weapon due to being ended prematurely, the country possessed the capabilities to both design and manufacture the necessary components needed for a hydrogen bomb. The project was cancelled due to American pressures in 1981, although only formally ended in 1987 under Felipe González.^[1]