NEW JERSEY, USA (AP) — US President Donald Trump yesterday acknowledged that the 2016 Trump Tower meeting between a Kremlin-connected lawyer and his son was to collect information about his political opponent, casting new light on a moment central to the special counsel’s Russia probe.

Trump, amid a series of searing tweets sent from his New Jersey golf club, tore into two of his favourite targets — the news media and Robert Mueller’s ongoing investigation into possible links between the president’s campaign and Russia. Trump unleashed particularly fury at reports that he was anxious about the Trump Tower meeting attended by Donald Trump Jr and other senior campaign officials.

“Fake news reporting, a complete fabrication, that I am concerned about the meeting my wonderful son, Donald, had in Trump Tower,” Trump wrote. “This was a meeting to get information on an opponent, totally legal and done all the time in politics — and it went nowhere. I did not know about it!”

But 13 months ago, Trump gave a far different explanation for the meeting. A July 2017 statement dictated by the president read: “We primarily discussed a program about the adoption of Russian children that was active and popular with American families years ago.”

But, since then, the story about the meeting has changed several times, eventually forced by the discovery of e-mail between the president’s eldest son and an intermediary from the Russian Government offering damaging information about Trump’s opponent, Hillary Clinton. Betraying no surprise or misgivings about the offer from a hostile foreign power, Trump Jr replied: “If it’s what you say I love it especially later in the summer.”

Sunday’s tweet was Trump’s clearest statement yet on the purpose of the meeting, which has become a focal point of Mueller’s investigation even as the president and his lawyers try to downplay its significance and pummel the Mueller probe with attacks. Trump again suggested without evidence that Mueller was biased against him, declaring, “This is the most one sided Witch Hunt in the history of our country.”

Trump’s days of private anger spilled out into public with the Twitter outburst, which comes at a perilous time for the president.

A decision about whether he sits for an interview with Mueller may also occur in the coming weeks, according to another one of his attorneys, Rudy Giuliani. Trump has seethed against what he feels are trumped-up charges against his former campaign chairman, Paul Manafort, whose trial began last week and provided a visible reminder of Mueller’s work.

And he raged against the media’s obsession with his links to Russia and the status of Michael Cohen, his former fixer, who is under federal investigation in New York. Cohen has indicated that he would tell prosecutors that Trump knew about the Trump Tower meeting ahead of time.