Complex sentence: On June 10,1999, Slobodan Milosevic, the Serbian President, signed the Kumanovo Treaty, forcing the Yugoslav Army and Special Anti-Terrorism Military Force to retreat from Kosovo.
Split into simpler sentences: On June 10,1999, Slobodan Milosevic, the Serbian President, signed the Kumanovo Treaty. The Yugoslav Army and Special Anti-Terrorism Military Force were forced for pullout from Kosovo.