In a pair of tweets posted Saturday night and Sunday morning, President Trump aired three separate grievances with the FBI. First, he targeted the agency's failure to investigate a January tip about Nikolas Cruz, the 19-year-old who confessed to the school shooting in Florida this past week. In the same tweet, the president went on to blame this grim error on the FBI's involvement in Special Counsel Robert Mueller's Russia probe. The FBI is "spending too much time trying to prove Russian collusion with the Trump campaign," he wrote. In a follow-up tweet, Trump turned to the Iran deal, criticizing the FBI for not investigating the Obama administration for paying Iran $1.7 billion to settle a decades-old legal dispute and help secure the release of American prisoners.

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