Don Lemon has tweeted that he's been fired by CNN after 17 years. In a statement posted to Twitter, he wrote: 'I was informed this morning by my agent that I have been terminated by CNN. I am stunned. After 17 years at CNN I would have thought someone in management would have had the decency to tell me directly. 'At no time was I ever given any indication that I would not be able to continue to do the work I have loved at the network. 'It is clear that there are some larger issues at play. With that...