ABC News with david muir March 22 2024

message from Kate Middleton revealing she was diagnosed with cancer and is undergoing preventative chemotherapy; Martha Raddatz has details on the deadly attack at Moscow’s Crocus City Hall that killed at least 40 people and wounded over 100, according to the Russian Foreign Security Service; Mola Lenghi has the latest on the school bus collision near Austin, Texas involving multiple vehicles that authorities say killed at least two people, including a preschool-aged child; and more on tonight’s broadcast of World News Tonight with David Muir.