US newspaper reveal the secret ransom payment to Iran

"Wall Street Journal" newspaper, the US said that the US authorities secretly sent a plane to Iran for the transfer of $ 400 million last January.
The paper that US authorities sent this amount to Iran in conjunction with the launch of Tehran for the release of four Americans, alluding to the possibility that this amount be a ransom for the release of the Americans.
The newspaper quoted US officials as it has been the transfer of funds in a foreign currency other than the dollar, because the US law does not allow to deal with Iran, the US currency.
According to the official version, the amount paid is the first of the settlement is estimated at one billion and 70 million dollars Washington obligated to pay for Iran because of non-delivery of weapons in a deal struck with the king of Iran's Shah Mohammad Reza Pahlavi, before the Islamic revolution in Iran in 1979, a boost.