USA Today
147

20 years after 9/11, here are the biggest threats to the US today

It's been 20 years since 9/11. Here's what our domestic security correspondent says are the biggest threats to U.S. national security today.

Coronavirus Coverage

USA TODAY Top Headlines

Entertain This

Special Delivery

Politics

Problem Solved

Coronavirus Coverage

Sports Headlines

Humankind

Militarykind

Just the FAQs

Animalkind