A pro-Hillary ClintonHillary Diane Rodham ClintonO'Rourke's rise raises hopes for Texas Dems down ballot Gabbard considering 2020 run: report Claiming 'spousal privilege' to stonewall Congress MORE super-PAC is digging into the archives to attack Donald Trump on national security, launching a variation of the 3 a.m. call ad used to attack Barack ObamaBarack Hussein ObamaSanders, Harris set to criss-cross Iowa Republicans bail on Coffman to invest in Miami seat Five takeaways from the first North Dakota Senate debate MORE in 2008. 

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In "Dangerous President," a red phone rings continuously while a President TrumpDonald John TrumpDemocrats slide in battle for Senate Trump believes Kushner relationship with Saudi crown prince a liability: report Christine Blasey Ford to be honored by Palo Alto City Council MORE sits idly by on Twitter. 

"The world is a dangerous place," a narrator says as the ad opens with a shot of the White House at 3 a.m. "At any hour, our president could be called on to act calmly, decisively, intelligently."

Meanwhile, the Trump character is sitting nearby scrolling through his Twitter feed.

"How great is Twitter? Boom. Just zinged another loser. Hit him with double exclamation. Bam!" says an actor portraying Trump. "Will someone get the damn phone? How annoying. Who is calling me at 3 a.m. anyway? Total loser."

The spot will begin airing in August, according to CBS News, in an ad buy worth at least $100,000 as part of Priorities' $35 million digital advertising program. 

"Donald Trump is the most dangerous and divisive nominee in modern history — and before he takes the stage tonight, Priorities USA is previewing a new digital ad we're calling 'Dangerous President,' " the group's communications director, Justin Barasky, said to CBS News.  

Trump has used that 2008 ad against Clinton throughout the campaign, saying that as secretary of State, she wasn't awake to answer phone calls on the 2012 terrorist attacks in Benghazi. 

"She's a disaster. Remember the famous call at 3 o'clock in the morning? She was sleeping, OK? She was sleeping. You know, it was her ad. Who would you like at 3 o'clock in the morning? Well, the phone rang, and she was sleeping," Trump said in April.