Although Israel doesn’t officially acknowledge it, it is well understood that the country possesses a nuclear weapon arsenal (although the exact number of warheads are in dispute). It is similarly well understood that the United States opposed Israel’s nuclear weapons program during the John F. Kennedy and, to a lesser extent, Lyndon B. Johnson administrations. One part of the history that is less well known is that much of the funding for Israel’s nuclear weapons program came from private Americans in an effort that was spearheaded by, Abraham Feinberg, a prominent American who served as an unofficial advisor to both President Kennedy and President Johnson.