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Good morning.

Here’s what you need to know:

James Comey tells us how he really feels

• The former F.B.I. director staged an intensely personal attack against President Trump on Sunday night, saying in an ABC News interview that Mr. Trump was a serial liar who “is morally unfit to be president.”

Here are five highlights from his appearance on “20/20,” as well as annotated excerpts.

Mr. Comey, who was fired by Mr. Trump last year and is on a publicity tour for his tell-all memoir, cautioned against calls for impeachment. He said the American public was “duty bound” to vote Mr. Trump out of office.

(We also reviewed Mr. Comey’s book, “A Higher Loyalty,” which is set to be released on Tuesday.)

• It’s unclear where all of this is going to lead, but it’s almost certainly not over. Mr. Trump has called Mr. Comey a “slimeball” twice in recent days, and has said on Twitter that “when someone attacks me, I always attack back … except 100x more.”

Sanctions to follow airstrikes

• Washington plans to impose new sanctions on Moscow today, punishing it for having helped the Syrian government use what are believed to be chemical weapons.