YUGOSLAV LEADER IS NOT COMPLYING WITH KOSOVO PACT
Yugoslav Pres Slobodan Milosevic has not complied with NATO demands to withdraw troops and police forces from Kosovo; heavily armed Serb police continue to saunter around camp in sight of ethnic Albanian villages as NATO reiterates threat of air strikes; map; Sec Gen Javier Solana, joined by NATO commander Gen Wesley K Clark, arrives in Belgrade and complains that Milosevic is not complying with agreement brokered by Richard Holbrooke; White House spokesman concurs; relief workers and diplomatic monitors are at same time returning to Kosovo, suggesting NATO will not carry out attacks; monitors confirm that Serb military presence remains intense (M)