"Ukraine wants to make Russia nervous and bring the Crimea card to the international negotiating table," Ukrainian political analyst Volodymyr Fesenko said.
A Ukrainian military officer, Anatoly Stefan Stirlitz, posted the videos on his Telegram account on August 19.
Foreign Minister Sergei Lavrov levelled a raft of allegations at the West on Friday, including that Russia's rivals are meddling in its upcoming elections.
The report issued by the OHCHR said that prisoners' abuse was particularly rampant in the initial stage of the seven-year conflict.
Ongoing confrontations between NATO and Russian forces in recent weeks have prompted fears of a sudden, violent escalation.
Claims come days after a Black Sea spat between Moscow and London over the British Navy ship HMS Defender.
Moscow has—for the first time—deployed aircraft capable of carrying the Kinzhal hypersonic missile.
Foreign affairs spokeswoman Maria Zakharova said the passage of HMS Defender past Crimea must have been agreed with "the big brother" in Washington.
The Kremlin achieved its goal in promoting the narrative that Russia is capable of seeing off hostile foreign threats.
Deputy foreign minister Sergey Ryabkov said Moscow would take action to protect its borders. "Those who try to test our strength are taking great risks," he added.
Russia's Defense Ministry said it fired warning shots at HMS Defender off the coast of Crimea, which the U.K. has denied.
"The moves by warships of the U.S. and its allies have been clearly provocative," the chief of the General Staff of the Russian armed forces said.
Russia annexed Crimea in 2014, but the region remains internationally recognized as part of Ukraine.
Gitanas Nauseda was in Warsaw addressing a remote session of Poland's and Lithuania's parliaments, marking the 230th anniversary of their joint constitution, Europe's first such written democratic document.
Russia's Defense Ministry tweeted footage of a Black Sea Fleet warship firing a Vulkan missile.
"Does Ukraine want war? No. Is it ready for it? Yes," Zelensky said during a Tuesday address to his nation.
Russia's defense minister on Tuesday declared that the U.S. has employed "provocative actions" in the Black Sea amid escalating tensions with Ukraine.
Facing sanctions on many fronts, the Russian president extended by a year its own measures on countries that have tried to punish Moscow.
While jellyfish are fairly common in the area, such large congregations are quite unusual at this time of year.
The two men met on the sidelines of the United Nations General Assembly amid allegations that Trump asked Zelensky to investigate accusations of corruption against 2020 rival Joe Biden.
The U.S. has been sending military aid to Ukraine to help its forces battle Russian-backed separatists in the east of the country.
Volodymyr Zelensky also thanked the U.S. for its continued support, noting he hoped to visit the White House soon for a meeting with Trump.
The current affairs show 60 Minutes on the Kremlin-backed channel Channel 1 poked fun at the U.S. president's promotion of his Russian counterpart at the G-7 summit which has just finished.
"I've never seen it before," the former GOP congressman said, pointing out that the attack came "in defense of an autocrat."
"Under no condition can we agree with this logic," European Council President Donald Tusk said.
Where I had reason to believe a sensitive example could lead to a book being banned, I authorized replacing it.
The author replaced criticism of Putin with attacks on President Donald Trump and softened his description of Moscow's annexation of Crimea.
Remains belonging to one of the biggest birds that ever lived have been discovered in a cave in Crimea.