President Trump hit back Tuesday at Iran's inflammatory remarks declaring diplomacy between the two nations dead, while warning that any attack on America by the regime will be met with "overwhelming force."
Abbas Mousavi, a spokesperson for Iran's Foreign Ministry, had said that newly announced U.S. sanctions against Iranian leadership meant permanently closing the "channel of diplomacy" between the two countries. President Hassan Rouhani said the White House is "afflicted by mental retardation."
"Iran's very ignorant and insulting statement, put out today, only shows that they do not understand reality," Trump said in a late morning tweet. "Any attack by Iran on anything American will be met with great and overwhelming force. In some areas, overwhelming will mean obliteration. No More John Kerry & Obama!"
Trump lamented that the people of Iran "are suffering and for no reason at all," stating that the government "spends all of its money on Terror, and little on anything else." Trump said that while "Iran's leadership doesn't understand the words 'nice' or 'compassion,'" they do understand the words "Strength and Power."
The statements come amid mounting tensions with Iran. The administration imposed new sanctions Monday against Supreme Leader Ayatollah Ali Khamenei and his associates, after Iran shot down an unmanned American drone last week. That incident led to intense deliberations over a possible U.S. military strike, but Trump revealed last week that he called off such a strike due to the high number of expected casualties.
Before the drone shoot-down, six oil tankers also had been attacked in the Gulf of Oman, which the U.S. and its Gulf allies blame on Iran.
The Trump administration's sanctions were just the latest installation in part of its "maximum pressure campaign" aimed at pushing them to the negotiating table to work out terms for a deal that would be better for the U.S. than the Iran nuclear agreement. Trump pulled out of that deal, hoping to reach a new agreement that would prevent Iran from having ballistic missiles, which were not covered by the old deal entered into by then-President Barack Obama.
Fox News' Edmund DeMarche and Lucas Tomlinson contributed to this report.
More on FoxNews.com.