The common threads behind multiple attacks in U.S. this week

NPR | By Odette Yousef

Published March 13, 2026 at 4:17 PM EDT

This week saw multiple attacks in the U.S. that the FBI is investigating as terrorism. Experts say they reflect an accelerating threat environment fed by foreign conflict and online radicalization.

Odette Yousef

Odette Yousef is a National Security correspondent focusing on extremism.

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