The Iran–Contra affair (Persian: ایران-کنترا, Spanish: caso Irán-contras), also referred to as Irangate, Contragate or the Iran-Contra scandal, was a political scandal in the United States that came to light in November 1986. During the Reagan administration, senior Reagan administration officials secretly facilitated the sale of arms to Iran, the subject of an arms embargo. Some U.S. officials also hoped that the arms sales would secure the release of hostages and allow U.S. intelligence agencies to fund the Nicaraguan Contras. Under the Boland Amendment, further funding of the Contras by the government had been prohibited by Congress. The scandal began as an operation to free seven American hostages being held by a group with Iranian ties connected to the Army of the Guardians of the Islamic Revolution. It was planned that Israel would ship weapons to Iran, and then the U.S. would resupply Israel and receive the Israeli payment. The Iranian recipients promised to do everything in their power to achieve the release of the U.S. hostages. The plan deteriorated into an arms-for-hostages scheme, in which members of the executive branch sold weapons to Iran in exchange for the release of the American hostages. Large modifications to the plan were devised by Lieutenant Colonel Oliver North of the National Security Council in late 1985, in which a portion of the proceeds from the weapon sales was diverted to fund anti-Sandinista and anti-communist rebels, or Contras, in Nicaragua. While President Ronald Reagan was a supporter of the Contra cause, no conclusive evidence has been found showing that he authorized the diversion of the money raised by the Iranian arms sales to the Contras. Several investigations ensued, including those by the United States Congress and the three-man, Reagan-appointed Tower Commission. Neither found any evidence that President Reagan himself knew of the extent of the multiple programs. The rest of those indicted or convicted were all pardoned in the final days of the presidency of George H. W. Bush, who had been vice-president at the time of the affair.