What is the FBI’s role in combating terrorism?

The FBI is the nation’s lead federal law enforcement agency for investigating and preventing acts of domestic and international terrorism. It is the lead federal agency for investigating attacks involving weapons of mass destruction—those involving chemical, radiological, or biological agents or nuclear weapons. The FBI is also responsible for specific terrorism-related offenses, such as violence at airports, money laundering, attacks on U.S. officials, and others. The FBI also works closely with the Director of National Intelligence and other U.S. intelligence agencies to gather and analyze intelligence on terrorism and other security threats. It is the number one priority of the FBI to protect the U.S. and U.S. persons and interests around the world from terrorist attack.