Charlie Kirk was fatally shot during a speaking event at Utah Valley University, and the State Department announced plans to take action against foreigners praising violence online.
Israel's strikes on Hamas leaders in Doha killed a Qatari security official and created diplomatic tensions between Washington and its key Middle East allies.
President Trump demanded a quick trial and death penalty for Decarlos Brown Jr. after the suspect allegedly killed Ukrainian refugee Iryna Zarutska on Charlotte's light-rail system.
The Secret Service is under pressure to strengthen security amid unprecedented political threats after the assassination of activist Charlie Kirk and attempts on President Donald Trump.
The rifle found in Charlie Kirk's assassination was a bolt-action weapon that requires manual operation between shots and often retains spent cartridges in the chamber.
Brilyn Hollyhand told Fox that Kirk has never "been afraid of one day" and wasn't afraid ahead of embarking on his American Comeback Tour, which kicked off on Wednesday.
Ryan Routh's trial opens with prosecution alleging he traveled from Hawaii with assault rifle, ammunition and burner phones to target Trump at golf course.