US President Donald Trump's new communications adviser says it is time to hit the "reset button" within the Trump administration, warning if leaks continue "everyone is getting fired".

Key points: Scaramucci says he will crack down on leaks

Scaramucci says he will crack down on leaks Scaramucci says his appointment marks "beginning of an era of a new good feeling"

Scaramucci says his appointment marks "beginning of an era of a new good feeling" Scaramucci says Trump "will probably dial back some of those tweets"

Appearing on Fox News Sunday, Wall Street financier Anthony Scaramucci said one of his first tasks would be to halt the leaks and he pledged to better focus the message coming from the White House.

"I have in my pocket a radio studio, a television studio, and a movie studio," Mr Scaramucci said.

"The entire world has changed; we need to rethink the way we're delivering our information."

Mr Trump announced on Friday Mr Scaramucci — a polished television commentator and Harvard Law graduate — would take over the administration's top messaging job.

The appointment came as Mr Trump contended with sinking approval ratings and struggles to advance his legislative agenda.

Mr Trump has also been frustrated with the attention devoted to investigations of allegations of his election campaign's connections to Russia.

White House press secretary Sean Spicer abruptly resigned in protest over Mr Scaramucci's appointment. He will be replaced by his former deputy Sarah Huckabee Sanders.

Mr Scaramucci told Fox News his appointment marks the beginning of "an era of a new good feeling" and said he hoped to "create a more positive mojo".

Sorry, this video has expired Sean Spicer’s greatest moments

'Let the President be'

The challenges for Mr Scaramucci's new role were evident in a series of interviews over the weekend, where he discussed his plans for press strategy, but was beset by questions about the Russia investigation and Mr Trump's Twitter feed.

Mr Scaramucci stressed on Fox he would "let the President be the President," adding he wanted to "help aid and abet his agenda".

On the Russia stories, Mr Scaramucci said on Fox a "two-pronged approach" was needed.

"In some ways we want to de-escalate things and have there be a level of diplomacy. In other ways, we want it to be very hard-hitting and war-like," he said.

Asked about Mr Trump's tweets about the investigation on CBS' Face the Nation, Mr Scaramucci said: "If he thinks it's helpful to him, let him do it."

He also said on CNN's State of the Union, "We're going to defend him very, very aggressively when there's nonsensical stuff being said about him".

"And he will probably dial back some of those tweets."

Mr Scaramucci also said on CNN an unnamed person told him, "If the Russians actually hacked this situation and spilled out those emails, you would have never seen it".

He then said he was quoting Mr Trump, adding: "He basically said to me, 'Hey, you know, this is … maybe they did it. Maybe they didn't do it'."

US intelligence agencies have accused the Russian Government of meddling through hacking in last year's election to benefit Mr Trump and harm Mrs Clinton, and authorities are exploring potential coordination between Moscow and the Trump campaign.

On CNN, Mr Scaramucci called Ms Sanders "phenomenal" and also said he, "loved the hair and makeup person that we had on Friday. So, I would like to continue to use the hair and make-up person."

He later took to Twitter to stress he was referring to his own hair and make-up, adding: "I need all the help I can get! #humor."

On Saturday, Mr Scaramucci said he was deleting old tweets. Some of the tweets were at odds with Mr Trump's views, including one that praised Hillary Clinton's competence.

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Mr Trump defeated Mrs Clinton for president last year and continues to criticise her, including in several tweets on Saturday.

Mr Scaramucci said on Fox the old tweets were "a total distraction".

"When I made the decision to take this job, my politics and my political ideas do not matter at all. What matters is that I am supporting — subordinating all of that to the President's agenda," he said.

Sorry, this video has expired Mr Scaramucci reiterated his admiration for Mr Trump on several occasions during his media briefing.

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