"This is happening in the immediate vicinity of our borders and directly affects our security interests," Russia's president said.
The Colonial Pipeline being forced to close has also resulted in widespread fuel shortages, particularly at stations along the East Coast.
At a military parade on Sunday, Putin applauded those who served in World War II and said the country would once again rise to the challenge if it needed to defend itself.
The Russian president defended the Sputnik V vaccine after an annual vaccine conference named Moderna's jab the best in the world.
A bill in Russia would ban people from publicly comparing the Soviet Union's actions during World War II to Nazi Germany's.
The former secretary of state blames foreign countries for much of the falsehoods proliferating online.
The Hollywood star met Nicolás Maduro, whose country is subject to Western sanctions over a disputed election.
"We intend to act in accordance with the task set by the President of Russia to ensure a conflict-free coexistence by maintaining the balance of power and strategic stability," Russian Foreign Ministry spokesperson Maria Zakharova said.
Leonid Volkov said Putin has not met his international obligations before and any new agreements should take that into account.
Prosecutors in Moscow are now seeking to have Navalny's Anti-Corruption Foundation, labeled as an "extremist" organization, which would fully ban the network's 50 regional headquarters from operating, and put members and supporters at risk of criminal prosecution.
Air Force Lt. Gen. David Krumm said U.S. units were being taxed by Russian air activity but were handling the strain.
Protesters in the Czech Republic have called on the country's Senate to bring treason charges against pro-Russian President Milos Zeman, following allegations that Russian spies participated in a 2014 ammunition explosion that left two people dead.
The Russian opposition leader appeared by video link in a court hearing as he appealed a defamation conviction.
Appealing his conviction in court, the Russian opposition leader spoke by video from prison.
Leonid Volkov, Navalny's chief of staff, told Newsweek the jailed anti-corruption campaigner's case is the "most important" in Russian politics and the biggest challenge to Putin.
China criticized Biden's sanctioning of Russian diplomats and called Russia a "comprehensive strategic partner," in a sign of a growing relationship between the two countries.
Ukraine, the Baltic states and the Czech Republic were among the countries blacklisted by Moscow, Russian media reports.
Syrian President Bashar al-Assad "expressed his thanks for the humanitarian aid provided by Russia to the Syrian people to help them overcome the effects of the unjust blockade imposed on them," according to a readout by his office regarding a call with Russian President Vladimir Putin.
Medvedev penned an op-ed in a Russian paper that was highly critical of the U.S. president.
The Russian opposition leader said he is ending his 24-day hunger strike in prison after citing "tremendous progress" from the protest and noting that his health was in serious decline.
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."
International media coverage, sanctions and mass protests have failed to puncture the Kremlin's indifference to the health of one of its most prominent critics.
Concern is growing for the fragile health of the opposition leader, who has been on hunger strike in prison for three weeks.
The State University of Aerospace Instrumentation in St. Petersburg, Russia, told students on Wednesday that protesting in support of opposition leader Alexei Navalny would get them expelled.
"Does Ukraine want war? No. Is it ready for it? Yes," Zelensky said during a Tuesday address to his nation.
The Russian president said in his annual state-of-the-nation address that his country had been the victim of "illegal" sanctions.