A fiery exchange erupted on CNN's "NewsNight" Thursday between conservative commentator Scott Jennings and former Trump aide Caroline Sunshine, as they debated the duration and nature of the conflict between the United States and Iran.

The dispute began when Jennings stated that Iran "has been at war with us for 47 years," a timeframe dating back to the 1979 Iranian Revolution. Sunshine questioned this assertion, inquiring why this prolonged period of hostility was not more widely taught or understood.

"Scott, come on, 47 years?" Sunshine exclaimed. "The first time I've ever heard about the 47-year Iran war was like, this year."

Jennings responded dismissively, suggesting Sunshine "doesn't read much" and questioning if she had "just started following the news this year?" He argued that the Islamic regime, which came to power in 1979, has consistently opposed the West with the stated intention of developing nuclear weapons.

Sunshine found the characterization of the prolonged geopolitical tension as a "war" to be "insulting," particularly to her intelligence, and countered by asking how many Americans had been killed on U.S. soil in this alleged war. Jennings countered that "thousands" of Americans had been killed and that Iranian forces had maimed American soldiers and attacked U.S. allies.

Sunshine pressed Jennings on the financial and human cost of U.S. involvement, asking, "What number of American troops are we willing to commit to keep going, and like, what's your number?" She argued that the U.S. had already spent $300 billion and questioned the objectives and strategy.

Jennings retorted with a rhetorical question, asking how much money he was willing to spend to keep Americans safe from what he called "the worst regime in the world," answering, "A fair amount."

As the debate intensified, Sunshine stated that Iran does not possess a nuclear weapon and that its leaders do not desire one. Jennings expressed disbelief at this claim. Sunshine then argued that "nobody is firing a nuke at a country that has 5,000 of them."

Moderator Abby Phillip intervened to shift the conversation, asking Jennings about the need for the U.S. to secure uranium rather than focusing solely on Iranian behavior.

Sunshine, a former child actress known for the Disney Channel series "Shake It Up," joined the Trump White House in 2018. She has previously been involved in other high-profile debates on the network, including clashes with Keith Boykin regarding immigration policy and with Tara Setmayer concerning birthright citizenship. She identifies as a conservative.

The panel's heated exchange occurred against a backdrop of internal debate within the Republican Party following Donald Trump's past attempts to negotiate an end to the Iran War.