Moscow (CNN) US President Donald Trump's national security adviser met Russian President Vladimir Putin during a visit to Moscow on Wednesday and was told that Putin regrets the state of relations between their countries.

"I regret to say that Russian-American relations are not in the best shape," Putin told John Bolton, according to Russia's TASS news agency.

"I've said this many times publicly, I would like to repeat it at a meeting with you: I believe that this is largely a result of the acute domestic political struggle in the United States itself," Putin told Bolton, as cited by TASS.

Bolton is in the Russian capital to discuss a potential meeting next month between Putin and Trump. Details of a summit meeting between the two leaders will be announced on Thursday, a US official has told CNN. This official would not offer more details, but Helsinki remains a leading site contender for the two leaders' meeting.

Kremlin spokesperson Dmitry Peskov said that the meeting could be "used as an opportunity to exchange opinions on major international problems -- this list is quite clear and obvious -- as well as the poor state of our bilateral relations."

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