"Despite the intense focus on terrorism in the immediate post-9/11 years, other global challenges began to take precedence as the threat of large-scale terrorist attacks seemed to recede. The rise of China and Russia as geopolitical rivals and, more recently, the COVID-19 pandemic have shifted attention away from terrorism. US policymakers have increasingly prioritised great-power competition, economic recovery, and public health crises over sustained counterterrorism efforts."
https://www.rsis.edu.sg/rsis-publication/rsis/adapting-to-threats-us-counterterrorism-strategy-after-9-11/