A group of senior Reagan administration officials in the Senior Interdepartmental Group conducted a secret study on 21 July 1981, and concluded that the arms embargo was ineffective because Iran could always buy arms and spare parts for its American weapons elsewhere, while at the same time the arms embargo opened the door for Iran to fall into the Soviet sphere of influence as the Kremlin could sell Iran weapons if the United States would not. The conclusion was that the United States should start selling Iran arms as soon as it was politically possible to keep Iran from falling into the Soviet sphere of influence. At the same time, the openly declared goal of Ayatollah Khomeini to export his Islamic revolution all over the Middle East and overthrow the governments of Iraq, Kuwait, Saudi Arabia and the other states around the Persian Gulf led to the Americans perceiving Khomeini as a major threat to the United States.