President Trump tweeted yet again on Tuesday to complain about Attorney General Jeff Sessions. Trump said, again, if he’d known that Sessions would recuse himself from all matters related to the Russia investigation, he’d never have chosen him as attorney general.

The implication: The ongoing Mueller investigation roiling his presidency is actually Sessions’s fault.

The Russian Witch Hunt Hoax continues, all because Jeff Sessions didn’t tell me he was going to recuse himself...I would have quickly picked someone else. So much time and money wasted, so many lives ruined...and Sessions knew better than most that there was No Collusion! — Donald J. Trump (@realDonaldTrump) June 5, 2018

Tuesday’s tweet is just the latest in a series of attacks Trump has unleashed against Sessions, prompting speculation about whether he is (or was) planning to fire the attorney general or push him to step down.

Just last week, following an interview Rep. Trey Gowdy (R-SC) did addressing Sessions’s recusal from the Russian investigation, Trump said he wished he’d picked someone different for the job.

....There are lots of really good lawyers in the country, he could have picked somebody else!” And I wish I did! — Donald J. Trump (@realDonaldTrump) May 30, 2018

He went on to quote a former US attorney who had called Sessions’s recusal an “unforced betrayal” of the president.

“The recusal of Jeff Sessions was an unforced betrayal of the President of the United States.” JOE DIGENOVA, former U.S. Attorney. — Donald J. Trump (@realDonaldTrump) May 31, 2018

Since the start of the administration, Sessions, the FBI, and the Department of Justice have been among the president’s recurring social media targets. Many critics have said the posts are part of a broader effort to discredit the Russia inquiry.

The president has also repeatedly sought to shift attention away from the Russia investigation, questioning why Sessions hasn’t done more to probe the activities of Hillary Clinton and the Obama administration.

So why aren't the Committees and investigators, and of course our beleaguered A.G., looking into Crooked Hillarys crimes & Russia relations? — Donald J. Trump (@realDonaldTrump) July 24, 2017

According to a September New York Times report, Trump’s gripes about Sessions’s recusal are longstanding. He reportedly “berated” Sessions following the appointment of special counsel Robert Mueller and pressed Sessions to resign. Sessions even submitted a resignation letter to the White House, though in the end, he did not leave.

Sessions recused himself after the revelation that he participated in undisclosed meetings with the Russian ambassador to the US during the 2016 campaign. At the time, Trump seemed to feel more warmly toward Sessions and even came to the attorney general’s defense.

Jeff Sessions is an honest man. He did not say anything wrong. He could have stated his response more accurately, but it was clearly not.... — Donald J. Trump (@realDonaldTrump) March 3, 2017

A lot sure can change in a year.