By the end of 1993, the conflict over Nagorno-Karabakh had caused thousands of casualties and created hundreds of thousands of refugees on both sides. In a national address in November 1993, Əliyev stated that 16,000 Azerbaijani troops had died and 22,000 had been injured in nearly six years of fighting. The UN estimated that just under 1 million Azerbaijani refugees and internally displaced person were in Azerbaijan at the end of 1993. Mediation was attempted by officials from Russia, Kazakhstan, and Iran, among other countries, and by organizations, including the UN and the Conference on Security and Cooperation in Europe, which began sponsoring peace talks in mid-1992. All negotiations met with little success, and several cease-fires broke down. In mid-1993, Əliyev launched efforts to negotiate a solution directly with the Karabakh Armenians, a step which Elchibey had refused to take. Əliyev's efforts achieved several relatively long cease-fires in Nagorno-Karabakh, but outside the region Armenians occupied large sections of southwestern Azerbaijan near the Iranian border during offensives in August and October 1993. Iran and Turkey warned the Nagorno-Karabakh Armenians to cease the offensive operations that threatened to spill over into foreign territory. The Armenians responded by claiming that they were driving back Azerbaijani forces to protect Nagorno-Karabakh from shelling.