I guess I don't see Iran's president's comment as a threat so much as a defensive posture.

For context, here is the comment from Iran.
Rouhani said Sunday ‘‘American must understand well that peace with Iran is the mother of all peace and war with Iran is the mother of all wars.’’

Edit: There was also another comment,  The Iranian leader also had a message for US President Trump: "do not play with the lion's tail, because you will regret it eternally."

This leaves Trump with a sort of unenforceable promise. So if Iran makes another threat Trump either has to keep his promise and declare war on Iran or he doesn't and looks weak. But are we going to go to war because Iran makes another threat? I doubt it and I don't think he could garner enough support for it either.

Strong rhetoric also worked for Reagan. Iran didn't release the hostages until after he was President.

This is somewhat entertaining...

I like Cavuto. I don’t always agree but at least there is someone on Fox News that calls out the president on some of the things he needs to be called out on. I don’t think Fox News gets enough credit for actually doing this. The problem is that sometimes he contradicts some of the reporting that has gone on the Fox News Channel when he is commentating on his Fox Business Channel show. I don’t usually watch Cavuto on the Fox Cable News. I usually watch him on the Fox Business Channel. I watch the business side a lot more than the news side. If anyone is interested in political views from a business and economic perspective from a former escapee from England’s colonial rule I suggest watching Stuart Varney on the business channel. His show is much more enlightening (to me) than the Fox News shows.

Trump announces trade concessions from EU officials on soybeans, energy, tariffs

President Trump announced Wednesday that he has secured major trade concessions from European Union officials as part of an effort to head off a trade war between the U.S. and the E.U.

After talks at the White House with E.U. officials, Trump announced in a joint Rose Garden appearance that the delegation agreed to increase imports of soybeans and liquefied natural gas. Both sides agreed to work toward the goal of "zero" tariffs and subsidies on non-auto industrial goods and to "resolve" recent tariffs that both sides have imposed.

"This was a very big day for free and fair trade," Trump said.

http://www.foxnews.com/politics/2018/07/25/trump-greets-eu-chief-says-us-seeks-level-playing-field-on-trade.html

Not tired of winning ....   

SNIP

Yeah, pretty much.  He's doing what he promised.

It has crossed my mind that some (or maybe many) of these deals benefit him and/or his associates.  For now, I believe these are for the honest benefit of the American people.  He's an American too.  That said, it's not like former leaders didn't benefit from their time in office, and they often did it on the sly and not necessarily for the benefit of the country.

Fair and Balanced. 

http://www.foxnews.com/politics/2018/07/25/trump-greets-eu-chief-says-us-seeks-level-playing-field-on-trade.html

Not sure how you see threats towards the U.S. as a defensive posture?

Your context is very misleading. One speech, two threats. Maybe you should go back the last 20 years of constant threats towards us and our allies. Without any or minimal response from us or our allies. That is real context. Militarily speaking, we are no threat to Iran at this time. I saw on HNN yesterday that we have no carrier groups in the Persian Gulf at all at this time.

Trump is in no unenforceable promise. He is ratcheting up the rhetoric. Sabre rattling. And at the same time leaving Iran an out. Did the same to NoKo and we did not go to war with them. This is all very easy to see and understand. But I guess you don’t see what I do.

That is just what the comment sounds like to me. The comment appears to be one of a stay away warning that does not get aggressive but maintains a strong stance. For example, "If you come any closer, I am going to punch you." That is more of a warning not to provoke than it is just threatening someone. Iran knows we would demolish them and they do not want a war with us, but they want to save face. Maybe we will have to agree to disagree.

The problem is that Trump's statement doesn't sound like rhetoric, it sounds like a promise to engage in war. What happens if the Iranian president makes another one of these threats? Keep his promise or?

KIRIKLAR, Turkey, July 25, 2018, (LifeSiteNews) – After spending 21 months in a Turkish prison because of his Christian faith, American Pastor Andrew Brunson has been released and allowed to return to his home in Turkey where he will be under house arrest. 

According to the American Center for Law and Justice (ACLJ) which has been representing the North Carolina pastor, Brunson had been on trial for the crime of “Christianization.” 

ACLJ chief counsel Jay Sekulow said there have been “bilateral negotiations at the highest levels, including the President of the United States who I was on the phone with yesterday evening and this morning.”

President Trump “has been a key leader on this,” he added.

Trump tweeted last week that it was a "total disgrace" for Turkey to keep the pastor imprisoned.

There are still legal hurdles to be cleared before Pastor Brunson will be allowed to leave Turkey.

A just-issued a statement, ACLJ reports the good news:

We have confirmed that the Turkish government has issued an order releasing Pastor Andrew from prison and allowing him to be returned to his home in Turkey. This is a critical first step that we believe will result in the freedom of Pastor Andrew so he can return to the United States and be reunited with his family.

Brunson was jailed in October 2016 after being scooped up in a crackdown of Turkish President Erdogan’s political opponents in the wake of an attempted coup.

As reported last week by LifeSiteNews, the pastor lost 50 pounds during his time in jail and is now taking antidepressants.

Brunson was initially charged with membership in an armed terrorist organization. A Turkish judge had reportedly tried to link the Christian pastor to the political movement launched by Muslim Muhammed Fethullah Gülen, thought to be responsible for the attempted coup. The indictment also claimed Brunson helped members of the Kurdish Workers’ Party, which the Turkish government regards as a terrorist organization, escape by letting them become Christians and leave the country.

If you have not figured out already it is just posturing. It is meaningless in the threat. We have no assets close enough to make the threat good. Iran knows this. They also know not to mess any longer with Trump and the US. And all of this is being timed with the huge sanctions that are going to start on 8/6. It is just a warning that there will be more to come if you don’t stop. But he is not drawing a line. Here is a good article from Daily Wire that might explain it better than I am:

https://www.dailywire.com/news/33403/what-does-trumps-capslock-threat-iran-actually-ben-shapiro

Maybe Ben Shapiro will make more sense than I am.