Mara Liasson

Recent world events refocused the conversation on terrorism and national security. Jeb Bush sparred with Donald Trump over his comments about temporarily banning Muslims from the U.S.

Editor's Note: Some readers might find some of the language below offensive.

This post was updated at 11:30 a.m. ET

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Republican presidential candidates gathered for their third debate on Wednesday night in Boulder, Colo. This one focused on economic issues, with Donald Trump and Ben Carson at center stage.