Totally irrelevant. That doesn't mean that Trump is going to place tougher sanctions upon Russia, especially as he tries to obtain a cease fire agreement.
The only thing that makes sense is that CBS is lying yet again for the detriment of the peace process. They want a World War that will involve nuclear weapons being deployed to eliminate large swathes of human lives. These people are all insane.
By allowing the exemption to lapse, the sanctions became a bit tighter. I doubt this was a mistake or oversight. The sanction loophole was intended to allow existing transactions to clear. Extending it would have been seen as fealty to Putin. This, along with his resuming military aid shipments and intelligence sharing, helps Trump look a little more serious about pushing both sides to the bargaining table.