Good Monday morning. Here are some of the stories making news in Washington and politics today.

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• President Trump became the first sitting American commander in chief to set foot in North Korea on Sunday when he met Kim Jong-un, the leader of North Korea, in the heavily fortified Demilitarized Zone. The two men agreed to restart negotiations on a long-elusive nuclear agreement.

• Here are four takeaways from the pair’s meeting in the DMZ.

• When Senator Kamala Harris was in first grade, she was bused across Berkeley, Calif., as part of an integration program. The experience changed her and her classmates.

• The Democratic debates this past week provided the clearest evidence yet that many of the leading candidates are breaking with the incremental politics of the Clinton and Obama eras and embracing more sweeping left-wing policy changes.