It's becoming a habit

He did it with NATO; he did it with Theresa May; and now he's done it again.  Politico explains:

After appearing to threaten to pull out of NATO on Thursday, Trump then took the stage to praise the organization and declare it a “fine-tuned machine.” That night, as Trump enjoyed a formal dinner hosted by Prime Minister Theresa May, the British newspaper The Sun published an interview in which Trump was harshly critical of May’s handling of Brexit negotiations and suggested her rival, Boris Johnson, would do better.
The next day, Trump declared that he had not criticized May at all.

The explanation for his latest faux pas is ludicrous:

... the president himself emerged on Tuesday to personally walk back his statements in Helsinki, using a scheduled meeting with members of Congress to discuss tax reform as a platform for revising the statements that set off a 24-hour firestorm.

“In a key sentence in my remarks, I said the word ‘would’ instead of ‘wouldn’t,’” Trump said. “The sentence should have been — and I thought it would be maybe a little bit unclear on the transcript or unclear on the actual video — the sentence should have been: I don’t see any reason why it wouldn't be Russia. Sort of a double negative.”

So that's all right then?