The calculus in Iran is that they have yet to play the card they've been investing most in: make boots on the ground untenable. Until Iran feels that their bes

The calculus in Iran is that they have yet to play the card they've been investing most in: make boots on the ground untenable. Until Iran feels that their best card is valued correctly - either by being played, or made unplayable - reports on "negotiations" are meaningless fluff.