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.Police in Altoona, Pa. have arrested Luigi Mangione in the killing of UnitedHealthcare CEO Brian Thompson. Bianca Facchinei explains what's known about Mangione, how and where he was spotted, and what he was carrying.The end of former president Bashar al-Assad's regime is starting to sink in for Syrians, who are as excited as they are uncertain about what comes next for their country. Redmond Shannon looks at the scramble to find people believed to be missing in Syria's underground prisons and the country's immediate future.