Former President Donald Trump challenged President Joe Biden to a debate during his Tuesday night town hall.
The event was hosted by Fox News' Laura Ingraham in Greenville, South Carolina.
Ingraham suggested Nikki Haley, Trump's lone Republican challenger, had "almost teamed up" with Biden over complaints about the former president's age.
"Trump's age, Trump's demeanor, Trump makes mistakes, forgets names," Ingraham said. "She's trying to equate Biden's decline, which is fairly obvious, with you for being 77."
The former president said Biden had "always sort of been semi-declined."
"He was not one of the more smarter people," Trump said of Biden. "He's tried to be president many times, four times at least that they know of."
Trump noted Biden successfully secured the presidency as his cognitive ability had begun its declination.
"If I felt diminished or declined in any way, I think I'd know it," he continued. "I'd say, 'I'm not running.'"
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"We have a nation to run. We have a nation that has to survive," Trump said. "We have nuclear weapons ... the most powerful in the history of the world, so powerful that you don't even wanna talk about them."
Trump said Biden couldn't have negotiated even during his "best years."
"Now he has no idea what's happening," he said before noting his own experience with Russian President Vladimir Putin, Chinese President Xi Jinping, and supreme leader of North Korea Kim Jong Un.
Ingraham asked if Trump believed the aforementioned world leaders preferred Biden's presidency because the United States posed a weaker threat to them.
"They want him very badly to be president," Trump said. "I'm sure a lot of money's being spent between Russia and China."
The former president reiterated his claim that the Russian invasion of Ukraine would not have happened under his presidency.
"I'll challenge [Biden] right now. We can do you, we can do anybody you want," Trump said to Ingraham, who offered to moderate a debate between the two. "I'll take anybody from CNN, which is doing very poorly in the ratings, by the way ... I'll take anybody because I think you have an obligation in this case."
Trump cited his notable lead among fellow candidates as a cause for his absence from the Republican primary debates.
"When you have the final Republican, the final Democrat, two people, you have to debate regardless of polls," he added.
The former president said he would commit to as many debates as necessary with Biden.
"I would like to do it starting now," he said. "I don't think he's going to debate though.