According to this breaking report from the Jerusalem Post the secret details are being finalized by John Kerry and Iran’s FM Javad Zarif (aka the guy who screams at John Kerry).

What could possibly go wrong?
Via Guardian:
Foreign ministers at talks in Lausanne on Iran’s nuclear programme have said they are inching towards a joint statement, which would be accompanied by a set of agreed parameters that would be kept secret, according to European diplomats.
After an all-night negotiating session, the ministers continued to make slow progress towards a consensus, but diplomats said there were still a small number of issues to be resolved before a joint statement could be made.
The negotiations in Lausanne have entered their eighth day and are two days beyond a deadline for arriving at a framework accord which was supposed to be a preliminary step before a comprehensive and detailed agreement at the end of June.
The Iranian delegation, led by foreign minister Mohammad Javad Zarif, only wants a vague joint statement, while the US secretary of state, John Kerry, needs to bring back specifics to Washington to convince Congress not to impose new sanctions.
The compromise, say European diplomats, would be a joint statement of understanding and two or three pages of agreed “parameters” setting out points agreed by Iran and the six world powers taking part in the Lausanne talks. Those details would not be made public but would be briefed to governments and to Congress.
