NATO would reserve the right to resume bombing if the Serbian forces fail in any way to abide by the agreement, officials said.
The United States had threatened to resume bombing if Iraq did not comply.
Mr. Jayewardene said the air force might resume bombing of Tamil rebel targets.
One way to end the dispute, of course, would be for the United States to resume bombing - severely enough that the islets disappear under the ocean.
To avoid giving the Japanese the impression that the Allies had abandoned peace efforts and resumed bombing, Truman then ordered a halt to further bombings.
The Russian Parliament was poised to approve the treaty a year ago, but balked when the United States resumed bombing of Iraq.
In June 1968, he advocated that the U.S. resume bombing of North Vietnam.
US resumes bombing of North Vietnam.
If, after that time, the Serbs' progress toward completing the withdrawal was deemed inadequate, NATO might resume bombing, the officials said.
American military officials have said they have "hundreds of targets" in Iraq and are ready to resume bombing if ordered.