Episode 122

Mary Bruce has details on Pres. Trump's Oval Office meeting with newly-elected Canadian PM Mark Carney, who won office after campaigning against Trump's tariffs and told the president today that Canada is "not for sale"; in an ABC News exclusive, Pierre Thomas reports on the urgent FBI warning about the online network ‘764' that authorities say targets children on social media and gaming platforms and extorts them into sending violent and sexual content; ahead of the secretive conclave to elect the next pope, David Muir shares new images from inside the Vatican and reports on how this year's will be like no other; and more on tonight's broadcast of World News Tonight with David Muir.