President Donald Trump will welcome Israeli Prime Minister Benjamin Netanyahu to the White House on Wednesday, as tensions escalate across the Middle East and negotiations intensify to curb Iran's nuclear weapons program.

Netanyahu is expected to press Trump to pursue a deal that would halt Iran's uranium enrichment, and rein in its support for proxy groups like Hamas and Hezbollah, The Caspian Post reports, citing BBC.

"I will present to the president our outlook regarding the principles of these negotiations," Netanyahu told reporters before leaving for the US.

Iran has said it will not limit uranium enrichment unless Western nations scale back sanctions that have severely strained its economy.

Netanyahu's visit on Wednesday marks his sixth trip to the US since Trump's return to office - more than any other world leader.

A close Trump ally, Netanyahu has long argued that Iran represents an existential security threat to Israel and has pushed the US to curb Tehran's influence in the region.

"The Prime Minister believes that any negotiations must include limiting ballistic missiles and ending support for the Iranian axis," Netanyahu's office said in a statement ahead of his trip.

The visit comes as the US increases its military presence in the Middle East, with Trump warning Tehran of action if it fails to strike a nuclear deal.

On Tuesday, the president said that he was "thinking" about sending a second aircraft carrier strike group to the Middle East.

The USS Abraham Lincoln aircraft carrier was sent to the region last month after Trump threatened to strike Iran to stop a government crackdown on mass protests in which thousands of people were killed.

"We have an armada that is heading there and another one might be going," Trump said in an interview with Axios. Trump said Iran "wants to make a deal very badly", adding that a diplomatic solution remains possible.

Israeli officials have also said the country reserves the right to take military action against Iran if it doesn't reach a nuclear agreement with the US.

Netanyahu is under pressure from allies in his far-right government to use his ties to Trump to push for a wide-ranging US-Iran deal that meets the Israeli government's security concerns, experts said.

"Israel is concerned that in the haste to get a deal with Iran, the president might embrace a deal that doesn't address Iran's missile program or support for proxy groups, or that allows it to have some remnant of its nuclear program," said Dan Byman, a professor at Georgetown University.

"One worry Israel and other allies have about the US under Trump is that he wants a deal more than he wants a particular outcome," added Byman.

Analysts say the Iranian regime is in a weaker position now after the mass protests and a 12-day air campaign by the US and Israel last year.

"The Iranian regime today is really vulnerable," said Mohammed Hafez, a professor at the Naval Postgraduate School and expert on Middle Eastern politics. "The US and Israel feel they hold all the cards, Iran is on its back foot, and they can make these maximalist demands."