Original sentence: After the government of Serbia rejected a NATO ultimatum, OAF was launched in March 1999.In June 1999 Slobodan Milosevic ordered withdrawl from Kosovo
Edited sentence: After repeated warnings from NATO to Serbian president Slobodan Milosevic to remove his forces from Kosovo, OAF was launched in March 1999.In June 1999 Slobodan Milosevic withdrew his forces from Kosovo