Is this supposed to work as a negotiating tactic?

On the other hand, in light of how bad Emperor Barry I wants to reach a deal -- any deal -- on their nuclear program, even one that lets them get an atomic bomb, I think maybe yes, it will work:

(Reuters) - Iran's foreign minister has warned the United States that failure to agree a nuclear deal would likely herald the political demise of pragmatist President Hassan Rouhani, Iranian officials said, raising the stakes as the decade-old stand-off nears its end-game.

Think Emperor Barry I isn't desperate for a deal? Think again:

A top Iranian military leader claims that U.S. officials have been “begging us” to sign a nuclear deal during closed door negotiations with Tehran over its contested nuclear program, according to recent comments made to the Iranian state-controlled media.
Mohammad Reza Naghdi, the commander of the Basij, a paramilitary group operating under the wing of the Iranian Revolutionary Guard Corp (IRGC), recently claimed that the “Americans are begging us for a deal on the negotiation table,” according to commentspublished in Persian and independently translated for the Washington Free Beacon.

Maybe in light of that, the "threat" against Rouhani makes sense. Think "Blazing Saddles:"

Unfortunately, it cuts off before Clevon Little says, "You sure are good. And they sure are dumb." Because that describes the Iranians and the Obama administration perfectly. Iran is going to get everything it wants. Thanks, Barry.