Iranian state media says that Iran has sent an official response to a letter from U.S. President Donald Trump to the Iranian supreme leader that was seen as an attempt to jumpstart talks over Tehran’s

"Bad things" will happen to Iran unless it reaches a deal with the U.S. on its nuclear program, President Trump said Friday. Why it matters: Trump's comments came after Iran responded to the letter the president sent the country's supreme leader three weeks ago,

Tehran neither rejected negotiations nor accepted face-to-face talks in its response to President Trump’s letter calling for talks to curb Iran’s advancing nuclear program. Here’s what to know.