Dana White is fed up.

The UFC president has spent much of International Fight Week in Las Vegas, which was supposed to be a celebration of the sport culminating with the biggest event in the company's history on Saturday, scrambling to replace his main event after Jon Jones tested positive and was flagged by USADA for an anti-doping violation.

Jones spoke to the media on Thursday to express his regret and showed remorse for having taken a supplement with a banned substance, but White refuses to speak with Jones. White went on The Herd with Colin Cowherd on Friday and ripped into the light heavyweight star for this latest transgression.

"There's nothing for me and Jon Jones to talk about," said White. "I haven't [talked to him] and I'm not gonna. There is nothing for us to talk about ... The guy is a professional and I truly believe, and I'm not the biggest Jon Jones fan right now, but I truly believe that he took a supplement that had this stuff in it and it wasn't intentional. I truly believe that, but at the same time, come on! You're 28 years old. You're arguably the greatest talent to step foot in this sport, right? Call USADA and tell them what supplements you're taking!

"You've already been through this history of absolute madness. Why would you, for get to us, why would you do this to yourself? You're a grown up. And the guys that are around him are just as bad. The guys who are supposed to be looking out for him and watching his back, give me a break. Jon should've cleaned house a long time ago. That's what Jon should have done."

White being upset is more than understandable. Jones is such a talent and big name that it's frustrating to White and UFC fans to have him miss so much time for reckless behavior.

Jones' history of outside-the-ring issues over the last two years are well documented, and since his return at UFC 197, he has insisted that he has a new approach and has grown up. Taking a supplement without checking to make sure it is legal is just too reckless to do under the new USADA policy and, for White and others, shows that Jones still hasn't committed to trying to ensure he avoids any more setbacks to his career.