Aiden Aslin, who joined the Ukrainian army as a Marine in 2018, appears to have been photographed handcuffed after surrendering to Russian troops. The man shows signs of being beaten in the image, which was posted by a pro-Russian Twitter account. The caption read: “Aiden Aslin. Britain, Nottingham. An English mercenary who fought alongside the Nazis in Mariupol. Many lost it, but we found it. An interesting interview is coming soon.” A friend of Mr. Ashlin told the Telegraph that the photo looked like him and that his tattoo insignia could be seen. “Pooks has succeeded since his appearance,” the friend said on Twitter. “We will stay in the public eye every day until it is exchanged.” Mr. Aslin’s unit was defending the southern city of Mariupol, which has been devastated by continuous bombardment by Russia.