Hours after Iran's leadership mocked President Trump saying the White House is "afflicted by mental retardation", the US President hit back with this tweet. He said that Iran's leadership doesn’t understand the words “nice” or “compassion,”. Also that "Iran’s very ignorant and insulting statement only shows that they do not understand reality. Any attack by Iran on anything American will be met with great and overwhelming force. In some areas, overwhelming will mean obliteration".