Analysis of information sources in references of the Wikipedia article "Insurgency in Kosovo (1995–1998)" in English language version.
By February, KLA members were regularly attacking policemen in Drenica; numbers killed in January and February totaled 66, as opposed to 55 in all of 1997.
State Department officials later said that about 4,000 Serbian special police forces had withdrawn from Kosovo, leaving about 10,000 special police, roughly the same amount that was in the province before February 1998.
In February 1998, the success of the KLA in undertaking guerilla activities and the nature of the Serbian responses to them led to the official beginning of the war.