Donald Trump tweeted threatening words to Iranian Hassan Rouhani late Sunday.

In all caps, Trump warned the Iranian president,

“NEVER, EVER THREATEN THE UNITED STATES AGAIN OR YOU WILL SUFFER CONSEQUENCES THE LIKES OF WHICH FEW THROUGHOUT HISTORY HAVE EVER SUFFERED BEFORE. WE ARE NO LONGER A COUNTRY THAT WILL STAND FOR YOUR DEMENTED WORDS OF VIOLENCE & DEATH. BE CAUTIOUS!”

President Rouhani had some choice words for President Trump over the weekend, an Iranian state news agency IRNA reported that Rouhani had said Trump was playing “with the lion’s tail.” “America should know that peace with Iran is the mother of all peace, and war with Iran is the mother of all wars,” Rouhani said. Rouhani had threatened the possible disruption of regional oil shipments if its own exports were blocked by the United States sanctions.

Trump said the comments were “DEMENTED WORDS OF VIOLENCE & DEATH. BE CAUTIOUS!”

Harsh words from both Presidents comes as tension rise between both nations. Trump has announced that he would withdraw the United States from the Iran nuclear deal and made threats of “highest level” of sanctions against the country and any other country that does business with Iran. Withdrawing from the nuclear deal would hurt the country even more with it’s economy already in trouble. Meanwhile U.S. officials have reported that Iranian hackers were planning extensive cyberattacks on the United States and Europe.

The people of Iran are fighting agaisnt the regime, people have taken to the streets to protest the corruption and call for expanded rights. In January, thousands of people took to the streets in the Middle Eastern country of Iran to protest against the country’s government.

Mike Pompeo, Secretary of State said in a statement, “In light of these protests and 40 years of regime tyranny, I have a message for the people of Iran: the United States hears you. The United States supports you. The United States is with you. While it is ultimately up to the Iranian people to determine the direction of their country, the United States, in the spirit of our own freedoms, will support the long-ignored voice of the Iranian people.”

{ny times}