The later Jericho family development is related to the Shavit and Shavit II space launch vehicles believed to be derivatives of the Jericho II IRBM and that preceded the development of the Jericho III ICBM. The Lawrence Livermore National Laboratory in the US concluded that the Shavit could be adapted as an ICBM carrying 500 kg warhead over 7,500 km. Additional insight into the Jericho program was revealed by the South African series of missiles, of which the RSA-3 are believed to be licensed copies of the Jericho II/Shavit, and the RSA-4 that used part of these systems in their stack with a heavy first stage. Subsequent to the declaration and disarming of the Nuclear programme of South Africa, the RSA series missiles were offered commercially as satellite launch vehicles, resulting in the advertised specifications becoming public knowledge.