John Kelly replaces Reince Priebus as White House chief of staff...

President Trump late Friday replaced his embattled chief of staff Reince Priebus with Homeland Security Secretary John Kelly, the decorated retired general who had been leading his administration’s charge on immigration enforcement.

The seismic shake-up capped another rollercoaster week in the West Wing, rocked by the public clash between Priebus and new White House communications director Anthony Scaramucci. The latter's hiring prompted press secretary Sean Spicer to resign in protest one week ago and immediately touched off speculation that Priebus could be next. 

White House sources confirmed to Fox News that Priebus, the former Republican National Committee chairman, resigned secretly on Thursday. 

“It has been one of the greatest honors of my life to serve this president and our country,” Priebus said in a statement. “I want to thank the president for giving me this very special opportunity. I will continue to serve as a strong supporter of the president's agenda and policies.” He added, “I can't think of a better person than Gen. John Kelly to succeed me and I wish him God's blessings and great success.”

Trump made the announcement publicly on Twitter late Friday afternoon. "I am pleased to inform you that I have just named General/Secretary John F Kelly as White House Chief of Staff. He is a Great American ... and a Great Leader. John has also done a spectacular job at Homeland Security. He has been a true star of my Administration," he tweeted.