proper, 29,451 displaced from Kosovo into Montenegro, and about 46,000 displaced within Kosovo itself, including 16,000 returning refugees unable to inhabit their original homes. Some sources put the figure far lower; the European Stability Initiative estimates the number of displaced people as being only 65,000, with another 40,000 Serbs remaining in Kosovo, though this would leave a significant proportion of the pre-1999 ethnic Serb population unaccounted-for. The largest concentration of ethnic Serbs in Kosovo is in the north of the province above the Ibar river, but an estimated two-thirds of the Serbian population in Kosovo continues to live in the Albanian-dominated south of the province. On March 17 and 18, 2004, unrest in Kosovo led to 19 deaths (11 Kosovo Albanians and 8 Kosovo Serbs), the burning of at least 550 homes and the destruction of 27-35 Serbian Orthodox churches and monasteries in the province after Albanian rioting targeted Serbs. Several thousand more Kosovo Serbs have left their homes to seek refuge in Serbia proper or in the Serb-dominated north of Kosovo. Since the end of the war, Kosovo has been a major source and destination country in the trafficking of women, women forced into prostitution and sexual slavery. The growth in the sex trade industry has been fuelled by NATO forces in Kosovo. International negotiations began in 2006 to determine the final status of Kosovo, as envisaged under UN Security Council Resolution 1244 which ended the Kosovo conflict of 1999. Whilst Serbia's continued sovereignty over Kosovo was recognised by the international community, a clear majority of the province's population sought independence. The United Nations-backed talks, led by UN Special Envoy Martti Ahtisaari, began in February 2006. Whilst progress was made on technical matters, both parties remained diametrically opposed on the question of status itself. In February 2007, Ahtisaari delivered a draft status settlement proposal to leaders in Belgrade and Pristina, the basis for a draft UN Security Council Resolution which proposes 'supervised independence' for the province. As of early July 2007 the draft resolution, which is backed by the United States, United Kingdom and other European members of the Security Council, had been rewritten four times to try to accommodate Russian concerns that such a resolution would undermine the principle of state sovereignty. Russia, which holds a veto in the Security Council as one of five permanent members, has stated that it will not support any resolution which is