I wonder why no one is talking about Japan. Japan has killed form 3 kk to 10kk people in China in 1937. In 1937, the Osaka Mainichi Shimbun and its sister newspaper, the Tokyo Nichi Nichi Shimbun, covered a contest between two Japanese officers, Toshiaki Mukai and Tsuyoshi Noda of the Japanese 16th Division. The two men were described as vying to be the first to kill 100 people with a sword before the capture of Nanjing. From Jurong to Tangshan (two cities in Jiangshu Province, China), Mukai had killed 89 people while Noda had killed 78 people. The contest continued because neither had killed 100 people. By the time they had arrived at Zijin Mountain, Noda had killed 105 people while Mukai had killed 106 people. Both officers supposedly surpassed their goal during the heat of battle, making it impossible to determine which officer had actually won the contest. Therefore, according to journalists Asami Kazuo and Suzuki Jiro, writing in the Tokyo Nichi Nichi Shimbun of December 13, they decided to begin another contest to kill 150 people.[49] After the surrender of Japan in 1945, Mukai and Noda were both arrested and tried as war criminals, and both of them were found guilty and executed by shooting
https://en.wikipedia.org/wiki/Nanjing_Massacre.
I can't believe why some people can even compare Putin to Hitler. It is fact that Putin is good manipulator and it is not afraid to use power even if it is meant to kill someone, but it usually end on one or few deaths, not whole race!!!! Nowadays I would say that USA is most aggressive country you won't see it on TV or news cuz everything is carefully hidden behind democracy or Humanitarian aid.