Eliot Cohen, a former State Department official under President George W. Bush, is advising other Republican foreign policy experts to “stay away” from Donald Trump Donald John TrumpOmar fires back at Trump over rally remarks: 'This is my country' Pelosi: Trump hurrying to fill SCOTUS seat so he can repeal ObamaCare Trump mocks Biden appearance, mask use ahead of first debate MORE’s transition team just days after he encouraged them to help the president-elect.

"After exchange [with] Trump transition team, changed my recommendation: stay away,” Cohen wrote on Twitter Tuesday morning. “They're angry, arrogant, screaming ‘you LOST!’ Will be ugly.”

After exchange w Trump transition team, changed my recommendation: stay away. They're angry, arrogant, screaming "you LOST!" Will be ugly. — Eliot A Cohen (@EliotACohen) November 15, 2016

ADVERTISEMENT

Cohen was the driving force behind a letter signed by dozens of former Republican officials during the campaign denouncing a Trump presidency as “dangerous.”

Last week, however, he struck a more conciliatory tone by trying to reassure those worried about the president-elect.

In a column in the American Interest published days after Trump’s election, Cohen dished out advice for foreign policy experts who have opposed Trump on whether they should accept a job in the administration.

“Yes, with two conditions, however: that they keep a signed but undated letter of resignation in their desk office (as I did when I was in government), and that they not recant a word of what they have said thus far,” Cohen wrote.

Rep. Mike Rogers (R-Mich.) announced early Tuesday that he is leaving Trump's transition team.

Rogers, a former FBI special agent and chairman of the House Intelligence Committee, is highly regarded among GOP leaders and was seen as an invaluable national security voice for the incoming administration.