Sarah Palin went on the defense when asked about the controversial comments she made last month tying President Barack Obama to her son's struggle with post-traumatic stress disorder, or PTSD.

The former Alaska governor sat down with NBC's "Today" show hosts Matt Lauer and Savannah Guthrie on Monday in what marked her first television interview since she officially endorsed Donald Trump's presidential bid.

During the interview, Palin reiterated her support and confidence in the billionaire businessman's ability to "restore constitutional government."

However, the former Republican governor became feisty when asked to clarify the statements she made involving PTSD and the president. She made the comments after her 26-year-old son, Track, was arrested in a domestic dispute in Alaska last month for reportedly punching and kicking his girlfriend. He was also charged with assault and possession of a firearm while intoxicated, reports Yahoo! News. Following the incident, Palin suggested that her son's domestic violence arrest could be related to PTSD from serving in Iraq in 2008. She then linked his PTSD to Obama, who she claims has a lack of respect for war veterans.

"My son, like so many others -- they come back a bit different. They come back hardened," Palin said at a Trump rally in Oklahoma in January, just one day after endorsing the GOP frontrunner. "They come back wondering if there is that respect for what their fellow soldiers and airmen and every other member of the military have given so sacrificially to this country, and that starts at the top."

Palin added, "They have to look at him and wonder, 'Do you know what we go through? Do you know what we're trying to do to secure America and to secure the freedoms that have been bequeathed us?'"

When Guthrie asked her about her remarks, Palin's interview on "Today" turned sour.

"You guys brought me here to talk about Iowa politics and the caucus tonight, not to talk about my kids," Palin shot back. "And that was a promise. But as things go in the world of media, you don't always keep your promises, evidently."

The 2008 Republican vice presidential nominee went on to deny that she was placing blame on the president for her son's PTSD.

"I never blamed President Obama," she said. "What I have blamed President Obama in doing though is this level of disrespect for the United States military that is being manifest in gutting budgets, in not trying to beef it up and let our military do the job that they are trained to do."

Lauer followed up by pressing Palin on the issue, asking if she regretted laying PTSD "at the foot of the president."

"What did I say that was offensive?" Palin said. "I don't regret any comment that I made, because I didn't lay PTSD at the foot of the president. I did say, though, and suggested very adamantly that there is much more that our commander in chief can do to prove that he respects our troops."

Watch the interview below: