Moscow's envoy to Washington, D.C, Anatoly Antonov, accused the U.S. of using Ukraine as a "tool" to pressure the Kremlin.
Foreign Minister Sergey Lavrov said that foreign actors may "provoke protests" ahead of Russia's parliamentary elections in September.
The Star Trek star has been criticized for his new show appearing on Kremlin-funded RT America.
Spokesman Dmitry Peskov warned of "negative consequences," two weeks on from the Putin-Biden summit.
The Kremlin achieved its goal in promoting the narrative that Russia is capable of seeing off hostile foreign threats.
The Russian president criticized NATO expansion and accused the U.S. and Europe of being behind the 2014 ousting of Ukraine's then-President, Viktor Yanukovich.
After their meeting in Geneva, the Russian president said of his U.S. counterpart "he does not miss anything, I can assure you."
Kremlin-loyal newspapers were full of praise for the Russian president's decisiveness—and his tie—but commentators pointed out that there was little progress made during the Geneva summit.
The then-VP claimed he looked into the Russian leader's eyes and told him, "I don't think you have a soul" during their handshake.
Khodorkovsky said that the pending election is a "theatrical performance, in which any candidates that the government isn't happy with will simply not be allowed to run."
Actor Steven Seagal recently joined Russia's A Just Russia - Patriots - For Truth party where he will focus on environmental issues.
Seagal and Putin have been close friends for years, and in 2018 the Russian leader tasked the actor with improving ties between Moscow and Washington.
Kremlin spokesman Dmitry Peskov described the hacking claims as "abstract" and said they would not impact the upcoming Biden-Putin summit.
President Joe Biden said that although U.S. intelligence had found no evidence to link the attack with the Russian government, he believed the country had "some responsibility to deal with" the issue.
Queen Elizabeth II faces questions over why she stripped Prince Harry of military titles but not her cousin—who is accused of selling influence to Vladimir Putin.
Leonid Volkov said Putin has not met his international obligations before and any new agreements should take that into account.
The critic of Vladimir Putin had been on hunger strike since March 31 in protest at inadequate medical treatment at his prison.
Into his fourth week of a hunger strike, the opposition leader is languishing in a prison amid growing concerns for his life.
The opposition politician is three weeks into a hunger strike and fears are growing for his life, with his personal doctor having warned he could "die any minute."
Concern is growing for the fragile health of the opposition leader, who has been on hunger strike in prison for three weeks.
The Russian president said in his annual state-of-the-nation address that his country had been the victim of "illegal" sanctions.
"Russia has its own interests, which we will defend in line with the international law," Putin said.
Russian opposition leader Alexei Navalny, who is imprisoned and in the midst of a hunger strike, described himself on Tuesday in an Instagram post as "a skeleton" who "staggers around his cell."
John Sullivan has said he would leave Moscow and return to the U.S. as the countries imposed tit-for-tat sanctions.
The Kremlin critic has been transferred to a prison hospital in a colony his allies say is renowned for its brutality.
Russian Foreign Minister Sergey Lavrov suggested that John Sullivan, the U.S. ambassador to Russia, return to the United States to consult with the White House in a response to new sanctions the U.S. has placed on Russia.
As Russian opposition leader Alexei Navalny, 44, sits in prison amid an ongoing hunger strike, he used his Instagram account to say that he has been threatened with a straitjacket to be force-fed on Friday.
Concern for the jailed Russian opposition leader, who has been on a hunger strike since March 31, has been growing.
Dmitry Polyanskiy, Russia's UN envoy, said that sanctions on Moscow would be met with an "adequate response."