It is assumed that on 16 February 2001, Albanians started fighting for their rights in Macedonia with the use of force. On that day armed groups attacked Macedonian police stations in the village of Tanuševci near Tetov. The clashes of various intensity lasted until major amendments to Macedonian constitution were adopted in November 2001. In the first stage of fighting (until May 2001), the Macedonians attempted to disarm the Albanian rebels and destroy the weapons which they had accumulated. This proved difficult because of the support which the latter had in Kosovo and the Prešev Valley, and the guerrilla strategy that they had developed earlier in Kosovo and now adopted. What is more, the Macedonian military actions were slowed down by Americans with the intention of limiting the number of casualties. In April, EU members and the US managed to establish a wide coalition. The major political parties of the country, both governing and oppositional (Macedonian and Albanian) decided to start negotiations concerning the conditions of the future peace treaty - that is, concessions for Albanians living in Macedonia and awarding them more rights. At the same time, the US and members of the EU states opposed the introduction of martial law in the country in order to deal with Albanian rebels by force. The leaders of Albanian parties in Macedonia and the main leaders of the Albanian revolution signed the Prizren Agreement, which was to provide a new plain for the future peace negotiations. Boris Trajkovski, the President of Macedonia, largely agreed with US and UE politics, but for the Prime Minister, his environment and most prominent Macedonian intellectuals - with Georgi Efremov, the President of MANU - the only solution was the division of the Macedonian territory and exchange of their minority groups. The representatives of the EU and US opposed such actions and emphasised that preserving the territorial integrity of Macedonia was absolutely crucial.