AMNA NAWAZ: Welcome to the "News Hour."

Tonight, the U.S.

says its cease-fire with Iran is still holding, but it was a violent day, with the U.S.

and Iranian militaries trading fire overnight.

And, today, Iran struck Kuwait's main airport, killing one person and injuring dozens more.

GEOFF BENNETT: The cease-fire is also being tested by the ongoing conflict in Lebanon, which has exposed rare public tensions between President Trump and Israel's prime minister.

Nick Schifrin begins his report with the new violence in the Gulf.

NICK SCHIFRIN: Inside Kuwait's international airport today, this is what cease-fire looks like, part of the passenger terminal clouded by dust and debris and the crackle of fire.

An airport employee points to the spot where he says Iranian drones made a direct hit.

The attack temporarily shut down the airport and shook America's Gulf allies, who are advocating for a U.S.-Iran diplomatic deal.

But there is no deal and the attacks are increasing.

Today, Iran fired missiles at Kuwait and for the first time since the cease-fire began Bahrain and the headquarters of the U.S.

Navy's Fifth Fleet.

The missiles either failed or were shot down, but the cease-fire is being strained.

Iran calls these launches a response to the U.S.

striking this oil tanker's engine to enforce the U.S.

blockade of Iranian ports.

DONALD TRUMP, President of the United States: They were slightly provoked, because we took a strong action for a different reason.

So they were reciprocating, yes.

NICK SCHIFRIN: Today, in the Oval Office, President Trump also labeled Iran strikes a response to U.S.

attacks, even though the U.S.

military called its strike self-defense after Iranian attacks.

And, today, as he has repeatedly in the past, President Trump dangled the promise of a diplomatic deal.

DONALD TRUMP: If it happens.

It might not happen.

Who knows.

But if it happens, it could happen like over the weekend.

NICK SCHIFRIN: But just hours before, on The New York Post podcast "Pod Force One" President Trump did not deny a much longer timeline.

MIRANDA DEVINE, "Pod Force One": So you think the blockade is still being placed by Labor Day?

DONALD TRUMP: I don't know.

I mean, I think it could be, but I think it's unlikely.

NICK SCHIFRIN: And President Trump confirmed he recently got salty with Israeli Prime Minister Benjamin Netanyahu.

MIRANDA DEVINE: Axios reported that you had a phone call with Bibi Netanyahu, the prime minister of Israel, in which you were angry with him.

You said, are you effing crazy?

What are you effing doing?

I helped you stay out of jail.

Is that true?

Did you speak to him in those terms?

DONALD TRUMP: I did.

I wouldn't say angry.

I was a little bit perturbed at his constantly fighting with Lebanon.

You know, at some point, I said: "Bibi, we have got to stop this."

BENJAMIN NETANYAHU, Israeli Prime Minister: If you think this is a crisis, you should be in some other conversations.

NICK SCHIFRIN: In a CNBC interview today, Netanyahu downplayed their differences.

And Israeli officials note to "PBS News Hour" this was not the first time that Trump cursed at Netanyahu.

BENJAMIN NETANYAHU: Sometimes, we have -- as in the best of families, you have these tactical disagreements.

We always find a way to work them out.

And we do so as great friends.

We can disagree in the morning and by the afternoon we have common action.

NICK SCHIFRIN: But Israel insists it will continue its unilateral campaign in Lebanon, striking the south today.

Israeli soldiers have invaded and occupied Southern Lebanon deeper inside the country than at any point in a quarter-century.

And, today, Netanyahu warned he would keep pushing President Trump to allow targeted strikes in the capital, Beirut.

BENJAMIN NETANYAHU: Terrorist chieftains, many of them are in Beirut.

So they're giving orders to target our cities from Beirut.

And we said, if you keep on targeting Israeli territory and our cities and our communities, then we will take out these terror chieftains in Beirut with surgical strikes.

REP.

JOAQUIN CASTRO (D-TX): My question is, do you agree that Israel should stop its military campaign in Lebanon and support the president's negotiations for a peace agreement with Iran?

NICK SCHIFRIN: On Capitol Hill today, lawmakers questioned Secretary of State Marco Rubio whether Lebanon jeopardized an Iran deal.

Rubio put the blame on Iranian proxy Hezbollah, not Israel.

MARCO RUBIO, U.S.

Secretary of State: What they're increasingly doing is taking more territory in the south to deny them launching space, because, understand, these rockets are being launched into northern villages and cities in Israel.

NICK SCHIFRIN: And President Trump today said he wanted Iran to make a deal independent of the war in Lebanon.

DONALD TRUMP: I'd like to separate it.

I'd like to have a separate thing, because it is separate.

NICK SCHIFRIN: But Iranian officials tell "PBS News Hour" they insist any initial memorandum of understanding include a Lebanon cease-fire.

And so the stalemate continues, both in the talks and in the Strait of Hormuz, where a fifth of the world's oil flowed before the war.

For the "PBS News Hour," I'm Nick Schifrin.

AMNA NAWAZ: And, late today, the U.S.

House approved a war powers resolution that would stop further military action in Iran, in a significant rebuke of President Trump's handling of the war.

Four Republicans defied Trump and supported the measure, which would still need to pass in the Senate before heading to the president's desk for an almost certain veto.