F.B.I. Temporarily Halted Cooperation With Canada Over References to 9/11

The abrupt move by Kash Patel, the bureau’s director, came as President Trump was ramping up his attacks on the country.The abrupt move by Kash Patel risked jeopardizing the F.B.I.’s relationship with Canada’s national law enforcement agency, which works closely with the bureau on a wide range of issues, including terrorism and cybersecurity cases.