Jiang Zemin and Bill Clinton exchanged state visits, but Sino-American relations took very sour turns at the end of the decade, especially after the third Taiwan Strait Crisis. On 7 May 1999, during the Kosovo War, U.S. aircraft bombed the Chinese embassy in Belgrade. The U.S. government claimed the strike was due to bad intelligence and false target identification. Inside the United States, the Cox Report stated that China had been stealing various top United States military secrets. In 2001, a United States surveillance plane collided with a Chinese fighter jet over international waters near Hainan, inciting further outrage with the Chinese public, already dissatisfied with the United States.