Firstly it was required. Initially by NATO that required an enemy after it lost the Soviet Union. With Putin there was a short honeymoon period from 2000 to 2007. If you look at this period you will find Putin and his wife meeting the royal family of Britain and George W. Bush stating he looked into Putin's eyes and found a decent human being. However, the western elite opinion reversed in 2007 when Putin made his famous Munich speech (which you can find in full and with English subtitles or vocal translation on YouTube).
Putin has te hsame emntal capacity as Hitler and is just more devious. He is corrupt a thief and has no feelingfor any person but himself and his sick ego