The Iran-Contra affair was a political scanal which was revealed in 1986 as a result of earlier events during the Reagan administration. It began as an operation to increase U.S.-Iranian relations, wherein Israel would ship weapons to a moderate, politically influential group of Iranians opposed to the Ayatollah Khomeini; the U.S. would reimburse Israel with those weapons and receive payment from Israel. The moderate Iranians agreed to do everything in their power to achieve the release of six U.S. hostages, who were being held by Hezbollah. The plan eventually 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, without the direct authorization of President Ronald Reagan. Large modifications to the plan were conjured by Lieutenant Colonel Oliver North of the National Security Council in late 1985. In North's plan, 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, there has not been any evidence uncovered showing that he authorized this plan.