Chinese balloon part of vast aerial surveillance program, U.S. says

The U.S. intelligence community has linked the Chinese spy balloon shot down on Saturday to a vast surveillance program run by the People’s Liberation Army, and U.S. officials have begun to brief allies and partners who have been similarly targeted.

The surveillance balloon effort, which has operated for several years partly out of Hainan province off China’s south coast, has collected information on military assets in countries and areas of emerging strategic interest to China including Japan, India, Vietnam, Taiwan and the Philippines, according to several U.S. officials, who, like...