The two outstanding issues - the make-up of a monitoring force and war crimes - are very sensitive to the the Serbian leader.
If he refuses, it should pull out the monitoring force and bomb selected Serbian military targets.
He also suggested that the international monitoring force could be done away with if the process of organizing it proves too cumbersome.
He urged the monitoring force to "report things as they are."
The committee agreed to raise $35.7 million from member states, enough to keep the monitoring force in action for three months.
Twelve countries agreed today to send soldiers to the monitoring force in Iran.
However, recent studies have shown that dissent serves as an important monitoring force within organizations.
It could be weeks before the bulk of the monitoring force arrives, United Nations officials said.
Among its proposed security guarantees, Israel wants an international monitoring force that would include American soldiers.
In other words, when both sides want a quiet border, as with Syria, international monitoring forces have worked reasonably well, Israeli officials say.