But if they violate, we will SNAP BACK!

Kerry says no sanctions snap-back for Iran arms, missile violations

According to Reuters:
Violations of an arms embargo by Iran or restrictions on its missile program would not force an automatic reinstatement or “snapback” of United Nations sanctions under a landmark nuclear deal, although other options would be available, U.S. Secretary of State John Kerry said on Tuesday.
“The arms embargo is not tied to snapback,” Kerry said. “It is tied to a separate set of obligations. So they are not in material breach of the nuclear agreement for violating the arms piece of it.”
[…]
The U.N. arms embargo and ballistic missile sanctions were the most difficult sticking points toward the conclusion of marathon negotiations between Iran and six world powers last month.
Iran, backed by Russia and China, had wanted those restrictions to be terminated under the nuclear agreement, which was completed on July 14, but a compromise was struck under which the arms embargo would remain for up to five years and the missile restrictions for up to eight years.
COMMENTARY: Some of the language being used by Kerry in his explanation regarding Iran arms and missiles appears similar to that used by Zarif in selling JCPOA to Iran’s conservatives and military leadership.
It has to be admitted the negotiators at Vienna came up with a clever means of settling what was considered an insurmountable roadblock to an agreement: the issue of Iranian arms transfers and missile development.
Mainstream media is always quick to point out the troubling issue of Iranian arms transfers to Lebanese Hezbollah and Iraqi Shia militias, however very seldom mentioned are Iranian arms transfers to the Iraqi Army and Kurdish Peshmerga.

So if that pesky place they think of as a settlement, otherwise known as Tel Aviv lies in ashes, will we snap back then, if it is done by 1,000 x 1,000KG missiles? Or do they HAVE TO use a nuke?
How about if is done with Russki U-235 and delivered by HAMAS? Does that count?
Maybe if Khameinei signs it and delivers it by Zeppelin at 40 mph for the press (and domestic consumption, of course)?