In the wake of Ayman al-Zawahiri's death, H.R. McMaster discusses the present-day strength of al-Qaeda and its relationship with the Taliban on CBS News.

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Gunners from the Armed Forces of Ukraine fire at Russian position with a 155 mm self-propelled howitzer 2C22 in the Kharkiv region on April 21, 2024. (Anatolii Stepanov/AFP via Getty Images)