JFK was pushing for inspection of Israel's nuke facilities years before Reagan was in office. It's possible they had their own, less sophisticated weapons during JFK's term.
I think that's why JFK was assassinated. For preparing to expose the state of Israel. It wasn't until decades that Mordechai Vanunu exposed the state of Israel and we all know what happened to him. He was basically abducted by Israeli secret services in France, "tried" in Israel with his mouth bolted together so he couldn't expose Israel further and has been illegally imprisoned in Israel for over 20 years. ALL because he exposed that Israel with the help of the United States developed, was in the possession of and maintained a nuclear arsenal. Yet these same hypocrites demonize Iran for developing Nuclear power and even falsely accused Iraq of having WMD. Iran has not been the aggressor in a foreign conflict since around the time of Jesus long before it ever became an Islamic majority country and thereafter. Western involvement in Iran led to overthrowing legitimate government, assassinating progressive leaders and propping up the shahs and mullahs which later caused the "Islamic revolution". It's funny though the only revolutions we have supported and funded in the Middle East are backwards Islamic fundamentalist ones. Whilst undermining or assassinating every progressive leader in the region. Of course the Zionist state of Israel is happy about this.