Then there are the bit players in this opposition. Pakistan is one, at least the ISI, which has always been a thorn in the side of the US. The ISI will find a way to get a nuke, and perhaps a mobile launcher, to Iran. Yes, Pakistan’s nukes are under the control of the Pak military, but there are enough kindred spirits within the Pak mil whom ISI can exploit to get a nuke or two. The ISI might be bad guys, but they are clever. They have the capability of moving a nuke or two into Iran. It would be tough to get a delivery system into Iran, but the nuke itself would not be difficult, hidden among the normal cross border trade that happens between the two nations in distant and desolate areas. US intel in that area is now quite limited, as under Trump most of the ME and SA experts were fired, since they had views on the feasibility of attacking Iran that differed from Trump’s “gut feel”. The ISI would only need Pakistan deniability, and Pakistan could then claim “rogue elements”, not Pak leadership, was responsible. Even if the ayatollah was against the use of nukes, there are hard line elements within the IRGC---likely already aligned with Pakistan’s ISI---who would support such an action.