She was still a "Rodham" at that point.
But JFK did say that "Israel" shouldn't be allowed to have Nuclear Weapons, and ordered inspections of their Nuclear sites, at the time... Also, RFK (sr) had begun regarding the predecessor to AIPAC, to be a foreign lobbying front, subject to registration under FARA.
LBJ was a big ol' Zionist, as well as hating the Kennedys, and being next in line. That speaks to potential 'motive (s)'.