 On August 22, 1992, President Bush announced that the U.S. and its allies had established a second no-fly zone for any Iraqi aircraft south of the 32nd parallel to protect dissidents from attacks by the government, as sanctioned by UN Security Council Resolution 688.In March 1993, a UN investigation reported hundreds of executions of Iraqis from the marshes in the preceding months, asserting that the Iraqi army's behavior in the south is the most "worrying development [in Iraq] in the past year" and added that following the formation of the no-fly zone, the army switched to long-range artillery attacks, followed by ground assaults resulting in "heavy casualties" and widespread destruction of property, along with allegations of mass executions.In November 1993, Iran reported that as a result of the drainage of the marshlands, marsh Iraqis could no longer fish or grow rice and that over 60,000 had fled to Iran since 1991; Iranian officials appealed to the world to send aid to help the refugees.