President Donald Trump's former campaign chair Paul Manafort, who appears to be in the sights of a Robert Mueller's Russia investigation, had quite a bit to tweet about last year.

Manafort, who joined Twitter in March 2016 but didn't tweet for the first time until June of that year, didn't shy away from tweets about Russia during the year. But the nature of those tweets—and how some were aimed squarely at Democratic Presidential candidate Hillary Clinton—might surprise you.

Fortune on Thursday analyzed Manafort's 160 tweets, published between June and December 2016, to identify any commentary he might have had about Russia.

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Here's what we discovered.

The first time Russia was ever mentioned in Manafort's timeline was in July 2016, when he complained of Democrats hurling an "attack" on Russia for allegedly hacking the national committee. He went on to use the tweet to target Clinton, who he said, "put national security at risk."

@PaulManafort: Dems attack Russia for hacking them but want us to believe that server in HC home was safe from hacking.HC put national security at risk!

Just days later on July 27, Manafort retweeted a comment from his boss, then-candidate Donald Trump, who called on "Russia or any other country" to share Hillary Clinton emails with the FBI. Manafort retweeted the post without comment.