Despite President Donald Trump’s public declaration that he isn’t concerned about impeachment, he has told people close to him in recent days that he is alarmed by the prospect, according to multiple sources…

The president has been on a days-long tirade, sources tell NBC News, lashing out at his own staff and lawmakers on Capitol Hill, frustrated by the threat of a Democratic House with subpoena power, an array of looming congressional investigations, multiple intensifying federal probes, a botched effort to find a new chief of staff and a potential partial government shutdown over a lack of funding for his top campaign promise — a border wall.

Trump has ranted about why no one around him is doing anything to stop any of it and vented about the lack of support he believes he has in Congress and within his own White House, the sources tell NBC News.