Transcript for Pompeo arrives in Middle East for Iran talks
The latest on the crisis with Iran. That regime making new threats as the white house prepares to unveil a new round of sanctions and secretary of state Mike Pompeo now in Saudi Arabia for talks. Jon Karl tracking new developments. Good morning, Jon. Reporter: Good morning. The president says he will impose those new economic sanctions later today as the Iranian military says it will strike again if any U.S. Aircraft enters Iranian airspace. More defiance from Iran. As a private Iranian news agency is quoting a top Iranian military official saying his forces are capable of shooting down more American drones. Although the president called off his planned military strike, ABC news has learned that the white house quietly green lighted a cyberattack on Iran disabling software on computer systems used to control rocket and missile launches. This morning, Iran's foreign minister is saying that was, quote, a big mistake and temporary to international law. President trump says he made his last-minute decision to call off the military strike when he was told how many Iranians could die in the attack. Everybody was saying I'm a warmonger. And now they say I'm a dove. And I think I'm neither. If you want to know the truth, I'm a man with common sense but I didn't like the idea of them knowingly shooting down an unmanned drone and then we kill 150 people. I didn't like that. Reporter: The drone the Iranians shot down is a sophisticated surveillance aircraft that cost some $130 million. National security adviser John Bolton and secretary of state Pompeo had urged the military strike to retaliate. But the president said he is not looking for war. John Bolton is absolutely a hawk. Up to him he'd take the whole world on at one time. Reporter: Bolton's tough talk took center stage in Israel Sunday. Neither Iran nor any other hostile actor should mistake U.S. Prudence and discretion for weakness. Reporter: The president says if it comes to war the U.S. Will, quote, aobliterate Iran. But what he really wants is talks aimed at a new deal to keep Iran from getting nuclear weapons. If Iran wants to become a wealthy nation again, become a prosperous nation, we'll call it let's make Iran great again, does that make sense? Make Iran great again. Reporter: Iran insists that the drone it shot down was flying over its airspace. The United States says it was clearly not flying over Iranian airspace but international airspace and the U.S. Is expected, George, to present evidence to that effect later today before the U.N. Security council. Jon, Iran threatening to restart their nuclear program. Of course, North Korea has a nuclear arsenal and the president's continuing to try to cultivate Kim Jong-un. Reporter: He sure is. We learned that he sent another they've been having this back and forth with letters. The president sent another personal letter to Kim Jong-un. The north Korean news agency there released that photograph of Kim Jong-un reading the letter and, George, listen to how they characterize it. They said the letter is of excellent content, and talked about the extraordinary courage of president trump, saying that Kim Jong-un would, quote, seriously contemplate the interesting contents of that letter. Of course, the big question is will there be yet another summit? And what is that content? They know. We don't. Jon Karl, thanks very much.
This transcript has been automatically generated and may not be 100% accurate.