In 1993, the UN Security Council called for Armenian forces to cease their attacks on and occupation of a number of Azerbaijani regions. In September 1993, Turkey strengthened its forces along its border with Armenia and issued a warning to Armenia to withdraw its troops from Azerbaijan immediately and unconditionally. At the same time, Iran was conducting military maneuvers near the Nakhichevan Autonomous Republic in a move widely regarded as a warning to Armenia. Iran proposed creation of a twenty-kilometer security zone along the Iranian-Azerbaijani border, where Azerbaijanis would be protected by Iranian firepower. Iran also contributed to the upkeep of camps in southwestern Azerbaijan to house and feed up to 200,000 Azerbaijanis fleeing the fighting.