Combat operations begin in Operation Allied Force, the NATO air campaign against Yugoslavia. US aircraft fly about two-thirds of the 45,000 sorties, pressuring Serb leader Slobodan Milosevic to withdraw his forces from Kosovo.
The U.S. continued to move a significant amount of airpower toward the Middle East in recent days as talks to forge a nuclear deal with Iran hung in the balance. Flight tracking data indicate there was unusually heavy movement of dozens of fighter jets and other assets that might be…

