China push for global power tops U.S. security threats: intelligence report Reuters | Apr 13, 2021 09:16 PM EDT The Chinese national flag is seen in Beijing, China (Photo : REUTERS/Thomas Peter/File Photo/File Photo) China's push for global power is the leading threat to U.S. national security, while Russia's efforts to undermine American influence and assert itself as a major actor also pose a challenge, said a U.S. intelligence report released on Tuesday. The 2021 Annual Threat Assessment lays out U.S. spy agencies' views of the chief foreign policy issues facing U.S. President Joe Biden in his first year in office, complicated by the coronavirus pandemic and global climate change.