Washington( CNN) President Donald Trump mailed this tweet on Thursday morning: “Workers of firm involved with the discredited and Fake Dossier take the 5th. Who paid for it, Russia, the FBI or the Dems( or all )? “

This is, of course, somewhat common fare by this level in the arc of Trump’s presidency. Faced this week with storylines he doesn’t like — questions about the Niger attack, controversy over a phone call he placed to the widow of one of the soldiers lost in that assault, Attorney General Jeff Sessions on Capitol Hill facing the issue of Russian meddling in such elections — he aims to change the subject via his Twitter feed. And he often does so by lobbing out a conspiracy assumption with merely the loosest ties to the factual world.

But even by Trump criteria, this morning’s tweet is somewhat remarkable. He is suggesting that a dossier prepared by a former member of British intelligence has not only been totally discredited( it hasn’t — more on that in a minute) but that it might have been funded by some combination of Russia, the Democratic Party and, wait for it, the FBI!