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Good morning.

Here’s what you need to know:

• A general makes his mark.

John Kelly is finishing his first week as chief of staff at the White House, which he once described as one of the most dysfunctional places he’d ever seen.

Among the retired Marine’s most immediate challenges is reining in warring factions in the West Wing, and he’s bringing military discipline to the job. “President Trump likes generals,” one of our White House correspondents explains in a video.

“The question is, does it last?” a former defense secretary said.