when did the us sign the nuclear non-proliferation treaty
Treaty on the Non-Proliferation of Nuclear Weapons Five states are recognized by NPT as nuclear weapon states (NWS): China (signed 1992), France (1992), the Soviet Union (1968; obligations and rights now assumed by the Russian Federation), the United Kingdom (1968), and the United States (1968). These five nations are also the five permanent members of the United Nations Security Council.
United States Declaration of Independence Historians have generally accepted McKean's version of events, arguing that the famous signed version of the Declaration was created after July 19, and was not signed by Congress until August 2, 1776.[104] In 1986, legal historian Wilfred Ritz argued that historians had misunderstood the primary documents and given too much credence to McKean, who had not been present in Congress on July 4.[105] According to Ritz, about thirty-four delegates signed the Declaration on July 4, and the others signed on or after August 2.[106] Historians who reject a July 4 signing maintain that most delegates signed on August 2, and that those eventual signers who were not present added their names later.[107]