Israel and Iran 'don't know what the f*** they're doing': Donald Trump

Updated 3.45pm with new Trump post that Israel will turn its bombers around.

An angry Donald Trump berated Iran and Israel Tuesday for violating a ceasefire deal, adding that he was "really unhappy" with Israel in particular.

The two countries have been "fighting so long and so hard that they don't know what the f**k they're doing, do you understand that?" the US president told reporters at the White House, hours after he had said a ceasefire between the two arch-foes had taken effect.

Trump said both sides had violated the truce but that he was especially irked by Israel. 

“As soon as we made a deal, Israel dropped a load of bombs the likes we haven’t seen before – the biggest load we’ve seen. When we say ‘you have 12 hours’ [to implement a ceasefire], you don’t go out in the first hour and drop everything you have on them,” Trump said. 

Iran violated the ceasefire, "but Israel violated it too," Trump told reporters on the White House's South Lawn as he departed for the NATO summit.

Trump said he would be speaking to Israeli leadership about the issue. 

His unusually public display of anger came after Israel announced strikes on Iranian capital Tehran on Tuesday morning, hours after Trump had announced plans for a ceasefire between the two countries. 

Israel said it would be launching the strikes because Iran had violated the ceasefire terms by firing a missile into Israeli territory. 

That missile was intercepted by Israeli defences and Trump said there were indications it was fired by "mistake".  

Earlier the same morning, he had posted on Truth Social: "ISRAEL. DO NOT DROP THOSE BOMBS" -- without it being clear which bombs he was referring to. 

"IF YOU DO IT IS A MAJOR VIOLATION. BRING YOUR PILOTS HOME, NOW!"

Hours later, Israel appeared to be complying and Trump in a new post said the ceasefire was holding.  

"ISRAEL is not going to attack Iran. All planes will turn around and head home, while doing a friendly 'Plane Wave' to Iran. Nobody will be hurt," Trump wrote. 

If it holds, the truce would be a big political win for Trump in the wake of his risky decision to send US bombers over the weekend to attack three nuclear facilities in Iran that Israel and the United States say were being used to build an atomic bomb in secret.

The US leader had said the truce would be a phased 24-hour process beginning at around 0400 GMT Tuesday, with Iran unilaterally halting all operations first. He said Israel would follow suit 12 hours later.

Israel has been bombing Iran in an offensive that began June 13. The United States joined the attack with a mission starting overnight Friday to Saturday against the deeply buried Fordow complex and two other sites.

Speaking to reporters at the White House, Trump insisted that the US bombing mission was a success.

"I think it's been completely demolished," he said, savaging US journalists for "fake news" and calling two networks "scum" for reporting that it remains unclear whether the Iranian nuclear infrastructure was truly dismantled. 

Israel says 'refrained' from further strikes on Iran after Trump call    

Israel said it had "refrained" from further strikes on Iran after a call betweenTrump and Israeli Prime Minister Benjamin Netanyahu.

"Following President Trump's conversation with Prime Minister Netanyahu, Israel refrained from further strikes," a statement said.