FBI sees surge of 1,800-plus threats and tips related to Israel-Hamas war, top DOJ official says

The U.S. faces a "unique moment" in confronting a domestic threat environment heightened since amid the Israel-Hamas war, Deputy Attorney General Lisa Monaco said

The United States faces a "sobering" and "unique moment" in confronting a domestic threat environment that has been heightened since the beginning of the Israel-Hamas war, Deputy Attorney General Lisa Monaco told ABC News in an exclusive interview on Thursday.

Monaco gave the first specifics and detailed look at how that conflict overseas has stoked an already elevated threat situation that many U.S. officials are describing as the most challenging since before 9/11.

The FBI has had to run down more than 1,800 tips and threats related to the war that began on Oct. 7 with Hamas' terror attack in Israel, Monaco said. The bureau now has more than 100 investigations currently opened in some way tied to the conflict.

The biggest concerns are lone wolves and small groups taking action with little to no notice, according to Monaco.

"I think we're in a unique moment where what we're most worried about -- those of us in the national security and law enforcement community -- are individuals or small groups who are often radicalized online and who are motivated by and influenced by a range of ideologies, from foreign terrorism and foreign terrorist organizations to domestic grievances," Monaco told ABC News Chief Justice Correspondent Pierre Thomas in an exclusive sit-down that will air Sunday on "This Week."