Russian President Vladimir Putin showcased what seemed to be intravenous (IV) track marks on his hands while meeting with soldiers, sparking rumors of his undergoing cancer treatment. The video was released by Russia's Ministry of Defense last week of showing the Russian president overseeing drills while accompanied by several soldiers. Putin at one point is seen donning ear protection and glasses as he practices shooting a sniper rifle. After standing up, Putin grabs one of the soldier's arms with his hand, with a visible mark showing. A reporter for the Ukrainian news website the Kyiv Post tweeted two videos out...