President Donald Trump issued a warning to Iran to "get serious" about negotiating an end to its ongoing war with the United States and Israel 'before it is too late" in a post shared on his Truth Social account Thursday (March 26) morning.

"The Iranian negotiators are very different and 'strange.' They are 'begging' us to make a deal, which they should be doing since they have been militarily obliterated, with zero chance of a comeback, and yet they publicly state that they are only 'looking at our proposal.' WRONG!!! They better get serious soon, before it is too late, because once that happens, there is NO TURNING BACK, and it won’t be pretty! President DJT," Trump wrote.

The president's post came hours after multiple Iranian officials denied negotiations claims of negotiations with the United States to end the ongoing war. Iranian Foreign Ministry spokesperson Esmaeil Baghaei told the India Today television channel that there were no talks between the two countries on Wednesday (March 25) via ABC News.

"There is no talks or negotiations between Iran and the United States," and there have "not been such negotiations for the past 25 days of the illegal war against Iran," Baghaei said. "No one can trust U.S. diplomacy."

"Our position is very clear," he added. "Our brave forces are focused on defending Iran's territory and sovereignty."

Ebrahim Zolfaqari, a spokesman for the Iranian military, also claimed that the U.S. was negotiating with itself.

"The strategic power you boasted of has turned into a strategic defeat. The claimant of global superpower status, if it could have escaped this predicament, it would have done so by now," Zolfaqar said in a video statement obtained by ABC News.

"Do not call your defeat an agreement," he added. "Has the level of your internal discord reached the point where you are negotiating with yourselves?"

"There will be neither any sign of your investments in the region, nor will you see previous energy and oil prices, until you understand this: stability in the region is guaranteed by the powerful hand of our armed forces," Zolfaqari continued.

"Stability comes through power. We state explicitly: Until such time as it is our will, no situation will return to its previous state. That will arise only when the very idea of taking action against the Iranian nation is completely erased from your corrupt minds," he added.

Trump previously claimed that Iranian officials were participating in negotiations and gave the U.S. a "big present" related to the Strait of Hormuz, a vital waterway for trade along the Persian Gulf that Iran has attempted to blockade in response to 'Operation Epic Fury.'

"They're going to make a deal. They did something yesterday that was amazing. Actually, they gave us a present, and the present arrived today. It was a very big present, worth a tremendous amount of money, and I'm not going to tell you what that present is, but it was a very significant prize," Trump said via ABC News.

Alireza Tangsiri, the Islamic Revolutionary Guard Corps navy commander who authorized the closure of the Strait of Hormuz, was killed in an airstrike launched by Israel on Thursday, Israel's defense minister Israel Katz confirmed via the New York Post. Tangsiri, 64, was eliminated during a strike on the Iranian port city of Bandar Abbas, which is located on the strait, and is the latest high-profile Iranian official to have been killed following the assassinations of IRGC spokesperson Ali Mohammad Naini, de factor leader Ali Larijani and anti-protest enforcer Gholamreza Soleimani.

Tangsiri approved the closure of the Strait of Hormuz, which serves as a vital waterway for trade along the Persian Gulf, in response to the United States and Israel's ongoing 'Operation Epic Fury' in Iran and vowed to keep it shut following an order from Ayatollah Mojtaba Khamenei, the new leader of the Islamic Republic, who replaced his father, Ayatollah Ali Khamenei, after he was killed during the first day of the war on February 28.

Ross Kaminsky on the News with Jeana Gondek