Special counsel Robert Mueller is doing some digging on a Ukrainian payment to President Trump, and his shovel seems to have hit a nerve.

The President took to Twitter Wednesday morning to criticize the New York Times for reporting the Russia investigation is looking at the $150,000 his foundation received from Ukrainian billionaire Victor Pinchuk.

Pinchuk, an industrialist who has also donated to Hillary Clintons causes and promotes Ukraine ties to Europe, gave the money to Trump’s foundation in exchange for a 20-minute speech via Skype.

It was political pundit Doug Schoen, not a Ukrainian businessman, who asked me to do a short speech by phone (Skype), hosted by Doug, in Ukraine, Trump posted on Twitter Wednesday.

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Though Trump continued his tradition of bashing any critical media coverage, the New York Times piece in question included details about Schoen setting up the meeting.

The report cited an anonymous source saying that the event, where Trump had audio troubles and criticized Barack Obama, was set up by Doug Schoen, a veteran political consultant and pollster who works with Mr. Pinchuk.

Trump said he was positive toward the Ukraine in the speech and said the attention was another negative to the Fake Russia C Story.

It was not clear what the C stood for, though the President has repeatedly blasted the idea of collusion between his campaign and the Kremlin, which is accused of meddling in the 2016 election in his favor.

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Trump’s Wednesday morning tweets also continued a renewed focus on investigators raiding the office of his longtime lawyer Michael Cohen, who has surfaced in the Russia investigation as well as in inquiries over a $130,000 payment to porn star Stormy Daniels.

The President called the raid, which reportedly included documents on Daniels as well as Cohens business dealings, unthinkable and bad.