CNN or FNN?

CNN retracted a story and is now being called fake news because of it. But did they do anything wrong? What is the real story?

http://www.msn.com/en-ca/news/politics/trump-on-cnn-retraction-what-about-all-the-other-phony-stories-they-do/ar-BBDlrOi?li=AAacUQk&ocid=spartandhp

http://www.msn.com/en-ca/news/world/three-resign-from-cnn-after-russia-story-retraction/ar-BBDjMMN?ocid=spartandhp