Washington (CNN) The White House said Tuesday that a letter from President Donald Trump to Russian President Vladimir Putin was meant to introduce Kentucky Republican Sen. Rand Paul to the Russian leader.

"At Senator Paul's request, President Trump provided a letter of introduction. In the letter, the President mentioned topics of interest that Senator Paul wanted to discuss with President Putin," White House spokesman Hogan Gidley said in a statement.

While in Russia, Paul announced Wednesday that he was "honored to deliver a letter from President Trump to President Vladimir Putin's administration."

"The letter emphasized the importance of further engagement in various areas including countering terrorism, enhancing legislative dialogue and resuming cultural exchanges," Paul said on Twitter.

I was honored to deliver a letter from President Trump to President Vladimir Putin's administration. The letter emphasized the importance of further engagement in various areas including countering terrorism, enhancing legislative dialogue and resuming cultural exchanges. — Senator Rand Paul (@RandPaul) August 8, 2018

CNN has reached out to Paul's office for more details.

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