 A western ambassador in Skopje cautioned that NATO force would most likely remain for a while after the disarmament process as the Albanian youths have had a taste of a successful insurgency.Part of the guerrilla group feels very sure of itself and might not surrender its weapons.The Macedonian Army and paramilitary police suffered a series of defeats by the rebels in Tetovo and the Kumanovo region, at Aracinovo on the outskirts of Skopje and in the renewed fighting that raged near both Tetovo and Kosovo in August.