WASHINGTON (AP) — U.S. officials said Monday that improvements ordered by President Joe Biden to strengthen defenses against Chinese espionage helped to identify last week’s spy balloon — and to determine that similar flights were conducted at multiple points during the Trump administration.

White House National Security Adviser Jake Sullivan said that after Biden took office, the U.S. “enhanced our surveillance of our territorial airspace, we enhanced our capacity to be able to detect things that the Trump administration was unable to detect.â€

¹ú²úÓÕ»ó¸£Àû. All rights reserved.