CBS Evening News with Norah O'Donnell, 11/22/23

A deadly car explosion at one of the busiest U.S. Border crossings with Canada, prompting the initial launch of an investigation into a possible terrorist attack. The White House released a statement saying President Biden has been briefed. Now a recent national terrorism assessment reviewed by CBS news shows a "Heightened threat environment" in the U.S. Due to the Israel-Hamas war.

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