(JNS) The United States had harsh words for Iran this week, first in a speech by U.S. Secretary of State Mike Pompeo, followed by a late-night tweet on Sunday by U.S. President Donald Trump, who in no uncertain terms made it clear to Tehran that it should not threaten America—now or in the future.

In a speech to Iranian Americans in Southern California on Sunday, Pompeo noted the widespread corruption, deprivation and human-rights abuses Iran foists on its citizens, even associating its leaders to the mafia. He also noted that the first round of new U.S. sanctions will begin on Aug. 4, followed by another round on Nov. 4.

Later that day, Iran President Hassan Rouhani threatened the United States, saying, “War with Iran is the mother of all wars.” It was followed by “Mr. Trump, do not play with the lion’s tail or else you will regret it.” Rouhani also insinuated that the United States cannot prevent Iran from exporting oil and natural gas.

The president responded with an all-caps tweet that did not mince words: “WE ARE NO LONGER A COUNTRY THAT WILL STAND FOR YOUR DEMENTED WORDS OF VIOLENCE & DEATH. BE CAUTIOUS!”