Last night, current and former White House officials gathered at the St. Regis in Washington, D.C., for an engagement party for former campaign staffer and CNN contributor David Urban, at once a reunion and seasonal celebration and a chance to compare notes on the gathering storm. The attendees included Dina Powell, Ivanka Trump, Anthony Scaramucci, Sarah Huckabee Sanders, and Tony Sayegh, a Republican strategist whom Trump appointed assistant secretary of the Treasury. “It was a garrulous holiday party,” one partygoer said, “but people were worried about Mueller. It’s not going anywhere.”

At the party, there was talk about Don Jr.’s ongoing legal exposure. “Don is very worried,” the attendee said. According to the source, Don Jr. departed this week on a hunting trip to Canada. “They think the bomb’s coming this week, and he doesn’t want to be anywhere near a microphone if the bomb drops,” the source said. In addition to fears that Don Jr. may have lied to Congress, he’s also said to be worried about his role as an executive at the Trump Organization. Last Friday, Michael Cohen’s lawyers revealed that Cohen cooperated with the New York State Attorney General on matters relating to the Trump Organization finances. (Donald Trump Jr.’s attorney did not respond to a request for comment.)

Today, the West Wing is bracing for Mueller’s office to file a document outlining how Paul Manafort violated his cooperation agreement by lying to prosecutors. And the John Kelly-is-departing drumbeat is once again deafening. “It’s chaos,” a former West Wing official told me. Trump fired off a few volleys of tweets this morning, signaling his mood. “There’s a feeling this could all unwind quickly,” a prominent Republican close to the Trumps told me.

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