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This video was filmed years before the 2022 Ukraine-Russia crisis

A video that shows a military tank hurtling down the street has been viewed thousands of times in social media posts that claim it was filmed in Ukraine in January 2022, after Western leaders sounded the alarm over a potential Russian invasion. The posts are misleading; the footage was filmed in May 2014, when deadly clashes erupted between Ukrainian troops and separatists in the city of Mariupol.

Read MoreThis video was filmed years before the 2022 Ukraine-Russia crisis

How we debunked reports of anti-Zelensky graffiti in a Paris suburb

Did graffiti depicting the Ukrainian President Volodymyr Zelensky as a black hole "absorbing European money" really appear on the streets of a Paris suburb? That's what a photo that has been circulating on social media since November 29 seems to show. However, our team found no trace of this graffiti at the actual site. Our forensic analysis of the photo shows signs that it was digitally altered. We also consulted some street art experts, who pointed out some inconsistencies in the art.

Read MoreHow we debunked reports of anti-Zelensky graffiti in a Paris suburb

This photo of Ukraine plunged into darkness is photoshopped

Has the entire Ukrainian territory been plunged into darkness due to Russian bombing? That's what some people on social networks have been saying since November 23, while sharing what appears to be an aerial photograph of Europe. While millions of Ukrainians have indeed lost power, this image has been manipulated using a photo that dates back to 2012.

Read MoreThis photo of Ukraine plunged into darkness is photoshopped

No, Ukrainian fans were not responsible for Nazi graffiti at the World Cup

Numerous accounts on Twitter and Telegram have been sharing a video they say is a report by Al Jazeera showing Nazi graffiti left by Ukrainian football fans during the kickoff game of the World Cup in Qatar on November 20. The media outlet, however, says that they didn"t make this video. Moreover, a number of clues have allowed us to establish that this is a fake news report and that the Nazi graffiti was, in fact, photoshopped.

Read MoreNo, Ukrainian fans were not responsible for Nazi graffiti at the World Cup

No, the Ukrainian president did not write a book called ‘Mein Kampf’

Is Ukrainian President Volodymyr Zelensky the author of a new book entitled "Mein Kampf", or "My Struggle", using the same graphic design as Adolf Hitler's manifesto? This is what many people online have been claiming to be the case since October 19, 2022. But the photos they use as proof are actually just photoshopped using old images. While the Ukrainian president is indeed preparing to release a book, it has a totally different title and cover design.

Read MoreNo, the Ukrainian president did not write a book called ‘Mein Kampf’

Is Ukraine really developing a dirty bomb? Be careful of Russian claims

Ukraine is apparently in the process of developing a so-called dirty bomb - a bomb containing radioactive elements - or, at least, that's the narrative that Moscow has been peddling since October 23, 2022. The Russian Ministry of Defence posted these claims to Telegram and Twitter, along with illustrated documents meant to support these claims. But the images published in these documents are old and some of them were even taken in Russia.

Read MoreIs Ukraine really developing a dirty bomb? Be careful of Russian claims

Were these Ukrainians staging a fake battle scene? Nope, it’s a music video

Pro-Russian social media accounts have been widely circulating a video over the past few weeks that shows a man dressed as a Ukrainian soldier acting out a scene in front of a camera. These accounts have claimed this video is proof that people are staging scenes of the war in Ukraine. Turns out, however, the video was filmed during the shooting of a music video by a Ukrainian artist whose music represents the "pain of war".

Read MoreWere these Ukrainians staging a fake battle scene? Nope, it’s a music video

No, these photos don’t prove that Zelensky is filming his videos in front of a green screen

Pro-Russian social media accounts have been circulating photos and a video of Ukrainian President Volodymyr Zelensky standing in front of a green screen, claiming that this image offers proof that the videos that he publishes on social media are filmed in a studio and not on the ground as claimed. However, these pictures don"t prove anything of the sort - they were taken during a forum where the president appeared as a hologram.

Read MoreNo, these photos don’t prove that Zelensky is filming his videos in front of a green screen