In the lead-up to his meeting with Russian President Vladimir Putin, President Donald Trump took to Twitter Monday claiming U.S.-Russia relations have “NEVER been worse,” blaming the U.S. for damaging the bilateral relationship.

Amid an ongoing investigation into Russian interference in the 2016 U.S. presidential campaign, Trump blamed “many years of U.S. foolishness and stupidity” and what he called a “Rigged Witch Hunt” for worsening ties between the two countries.

Trump is due to meet one-on-one with Putin and interpreters in Helsinki, the capital of Finland, on Monday.

The meeting follows a tense NATO Summit last week, at which Trump antagonized U.S. allies by suggesting that other NATO countries weren’t contributing enough to defense spending.

The Justice Department announced the indictment of 12 Russian intelligence agents Friday for hacking the Democratic National Committee, Hillary Clinton’s presidential campaign and state election systems, as part of Special Counsel Robert Mueller’s investigation into Russian meddling in the 2016 election.

Get our Politics Newsletter. The headlines out of Washington never seem to slow. Subscribe to The D.C. Brief to make sense of what matters most. Please enter a valid email address. Sign Up Now Check the box if you do not wish to receive promotional offers via email from TIME. You can unsubscribe at any time. By signing up you are agreeing to our Terms of Use and Privacy Policy . This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply. Thank you! For your security, we've sent a confirmation email to the address you entered. Click the link to confirm your subscription and begin receiving our newsletters. If you don't get the confirmation within 10 minutes, please check your spam folder.

Contact us at letters@time.com.