All smiles cause Kerry doesn’t have a clue..
Check it out:

Javad Zarif, Iran’s foreign minister, said late Wednesday that he is “all smiles” as talks with Western powers over the country’s nuclear weapons program run past a self-imposed deadline and Tehran pushes the United States to make more concessions.

When asked by a reporter whether he was feeling less optimistic following tension in the negotiating room, Zarif responded, “I am all smiles.”