In the biggest political story of the past week, one which was timed to coincide with Donald Trump's Birthday, the WaPo reported citing anonymous sources, that Special Counsel Robert Mueller was investigating President Trump for possible obstruction of justice. Just a few hours later on Thursday night, the DOJ's Deputy Attorney General Rod Rosenstein, who is overseeing the Russia probe due to Jeff Sessions recusal, released a stunning announcement which urged Americans to be "skeptical about anonymous allegations" in the media, which many interpreted as being issued in response to the WaPo report.

"Americans should exercise caution before accepting as true any stories attributed to anonymous 'officials,' particularly when they do not identify the country — let alone the branch or agency of government — with which the alleged sources supposedly are affiliated. Americans should be skeptical about anonymous allegations. The Department of Justice has a long-established policy to neither confirm nor deny such allegations.

Then on Sunday, the plot thickened further when according to ABC, special counsel Robert Mueller has not yet decided whether to investigate President Trump as part of the Russia probe, suggesting the WaPo report that a probe had already started was inaccurate.

"Now, my sources are telling me he's begun some preliminary planning," Pierre Thomas, the ABC News senior justice correspondent, said of Mueller on ABC's "This Week" although he too, like the WaPo, was referring to anonymous sources, so who knows who is telling the truth.

"Plans to talk to some people in the administration. But he's not yet made that momentous decision to go for a full-scale investigation."

.@PierreTABC: Mueller has preliminary plans to speak to people in admin, but no decision yet for "full scale" investigation of Pres. Trump. pic.twitter.com/BXcv9OeYIK

— This Week (@ThisWeekABC) June 18, 2017

On Friday, Trump responded to the Washington Post story by tweeting: "I am being investigated for firing the FBI Director by the man who told me to fire the FBI Director! Witch Hunt." But also on Sunday Trump's lawyer Jay Sekulow insisted the president was not literally confirming the investigation but was just referring to the story.

"Let me be clear: the president is not under investigation as James Comey stated in his testimony, that the president was not the target of investigation on three different occasions," Sekulow said Sunday. "The president is not a subject or target of an investigation."

"Now Mueller faces a huge decision," Thomas told "This Week" host Martha Raddatz. "Does he believe th