Winston Peters says he won't respond to Trump tweets as he can't be sure the US President actually sent them.

OPINION: The rest of the world may be hanging on United States President Donald Trump's Twitter feed, but acting Prime Minister Winston Peters reckons he doesn't bother - and claims he would fire anyone who does.

Peters said we couldn't even be sure if Trump's tweets were real.

That news might actually be quite reassuring to the rest of us , given Trump's latest effort - an angry tweet warning the leader of Iran to "never, ever threaten the United States again".

GETTY Winston Peters says he doesn't read the US president's tweets - and he'll fire aides who do.

Trump posted the tweet after Iranian President Hassan Rouhani warned of "the mother of all wars" if the US pursued hostile policies against the Middle Eastern country.

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"America should know that peace with Iran is the mother of all peace, and war with Iran is the mother of all wars," Rouhani said to Iranian diplomat..

ANDY JACKSON/STUFF Twitter? What twitter? Winston Peters says he doesn't bother reading Donald Trumps tweets, and doesn't even know if they are real.

Trump's tweeted his response using mostly capital letters, warning Iran would suffer consequences "the likes of which few throughout history have ever suffered before".

To Iranian President Rouhani: NEVER, EVER THREATEN THE UNITED STATES AGAIN OR YOU WILL SUFFER CONSEQUENCES THE LIKES OF WHICH FEW THROUGHOUT HISTORY HAVE EVER SUFFERED BEFORE. WE ARE NO LONGER A COUNTRY THAT WILL STAND FOR YOUR DEMENTED WORDS OF VIOLENCE & DEATH. BE CAUTIOUS! — Donald J. Trump (@realDonaldTrump) July 23, 2018

There doesn't seem to be much doubt the tweet indeed came from the US president. Indeed, for those who watch his Twitter feed regularly, it sounded like pure Trump.

Like much of his domestic policy, Trump appears to conduct much of his foreign policy via Twitter.

But not according to Peters, who rather than wade in to the tricky area of criticising the US President for intemperate language, sidestepped the issue completely by claiming there was no evidence to prove the tweet came from Trump in the first place.

When reporters at the acting prime minister's weekly press conference offered to show it to him as proof, Peters wasn't interested.

There was no evidence the tweet was made by Trump, insisted Peters, who is also the NZ foreign affairs minister.

"It's clear a lot of Mr Trump's tweets are not put out by him," he said.

Peters, was so dismissive of the president's Twitter feed, in fact, he suggested he would fire any of his officials at the Ministry of Foreign Affairs and Trade for following it.

Which will likely cause a flurry at MFAT where no doubt anyone who is serious about following US foreign policy is plugged into Trump's Twitter feed on a daily, if not hourly, basis.

You could argue it would be negligent for them not to. It is, after all, what most of the world has been talking about for the past year or so.

Peters' admission that he does not tweet, meanwhile, may come as a blow to his 25,000 followers.

His Twitter feed of ribbon cuttings and official statements is apparently updated by one of his officials.

Which presumably explains the acting PM's insistence one of Trump's aides may be responsible for the tweetstorms, rather than the president himself, manning the Twitter feed.

But even in the increasingly bizarre world that stands for modern politics, its a stretch to accept that an anonymous aide might be out-Trumping the president in stoking up global uncertainty.