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The President went on the front foot after a damaging week with the resignation of his national security adviser and a court battle over his controversial Muslim ban.

But the most bizarre moment came when the Donald tried to explain to reporters what uranium is – and showed he’d struggled to pass GCSE physics.

In a rant aimed at Presidential opponent Hilary Clinton, Trump said: “We had Hilary Clinton give Russia 20 per cent of the uranium in our country.

(Image: AFP/GETTY)

“You know what uranium is, right?

“It’s this thing called nuclear weapons, and other things, like lots of things are done with uranium, including some bad things.

“Nobody talks about that.”

In the conference Donald confirmed his wife Melania would be moving into the White House after reports she was miserable being First Lady.

The President also slammed CNN once more saying they were “really fake news” and claimed he wasn’t “ranting and raving”.

And he said reports of his administration in chaos were wide of the mark, calling it a “finely tuned machine”.