Trump erupted in anger while traveling to Davos after learning that Associate Attorney General Stephen Boyd warned that it would be “extraordinarily reckless” to release a classified memo written by House Republican staffers. The memo outlines alleged misdeeds at the FBI and Justice Department related to the Russia investigation.

For Trump, the letter was yet another example of the Justice Department undermining him and stymieing Republican efforts to expose what the president sees as the politically motivated agenda behind Special Counsel Robert Mueller’s probe.

Trump’s outburst capped a week where Trump and senior White House officials personally reproached Attorney General Jeff Sessions and asked White House Chief of Staff John Kelly to speak to others — episodes that illustrate Trump’s preoccupation with the Justice Department, according to two of the people.

Trump warned Sessions and others they need to excel at their jobs or go down as the worst in history, the two people said.