Former prosecutor explains what Giuliani may be trying to do — and why it would be devastatingly bad news for Trump

Rudy Giuliani has been widely criticized for his constantly evolving claims as he attempts to defend President Donald Trump.

But one former federal prosecutor believes there may be a method to Giuliani's madness.

On MSNBC's "The Last Word" with Lawrence O'Donnell, former federal prosecutor Glenn Kirshner explained how Giuliani may be using a legal concept known as "drawing the sting."

"It doesn't make a lot of tactical sense, Lawrence, but, you know, I think what Giuliani is, perhaps, trying to do is what we call draw the sting," Kirshner said.

"Every prosecutor knows that when you stand up and give an opening statement, you want to certainly highlight all the incriminating evidence that makes it seem beyond a reasonable doubt that the defendant committed the crime, but even more importantly, you want to draw the sting of any really bad evidence that cuts against your theory of the prosecution," he explained.

"So it's really tough to figure out the tactical wisdom behind Giuliani's choices, but, perhaps, it is to try to draw the sting from some really damaging information that would be coming to all of our attention fairly soon," he concluded.

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