Iran's Foreign Minister Mohammad Javad Zarif is praising Iran for shooting down a USA drone.
Iran claims that the drone violated its airspace, which the USA denies.
Iranian President Hassan Rouhani blamed the "interventionist military presence" of the United States for exacerbating the tensions between the two countries.
Saudi Arabia, the United Arab Emirates, the United Kingdom and the USA issued a joint statement Monday calling on Iran to stop retaliatory actions that threaten regional stability as tensions with Tehran grow.
On June 21, Trump said he had pulled out of launching conventional air strikes on Iran because he had been told that 150 Iranians would be killed.
"Iran can not have Nuclear Weapons!".
The US has since imposed a robust slate of punitive sanctions on Tehran created to choke off Iranian oil sales and cripple its economy - which he now plans to expand.
The US president announced that major sanctions would be put on Iran soon after he stopped the strikes on targets in the Islamic Republic, which were supposed to be a response for the downing of an American drone.
It also emerged the U.S. has carried out a cyber-attack on Tehran - disabling computer systems, which control rockets and missile launchers.
In a joint statement on Monday, the United States, Saudi Arabia, the UAE and Britain expressed concern over Middle East tensions and the dangers posed by Iranian "destabilizing activity" to peace and security in Yemen and the region.
U.S. Secretary of State Mike Pompeo arrived Monday in Saudi Arabia in a hastily arranged visit amid mounting tensions between the United States and Iran as Tehran's navy chief warned Iranian forces wouldn't hesitate to shoot down more U.S. surveillance drones from their skies. He said some of the sanctions had already been in the works while others were the result of Iran's recent actions.
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Trump says 'did not send that message' to Tehran warning of attack
US Cyber Command targeted the Iran military's computer systems used to control some of the country's rocket and missile launchers. Otherwise, you can have a bad economy for the next three years".
Riyadh has repeatedly accused Iran of supplying sophisticated weapons to the Houthis, who have launched cross-border attacks on facilities inside Saudi Arabia. And then you go outside of the Middle East, and you take a look at what's happening with countries.
"This administration has been going out of its way to try to provoke Iran to go to war", Rep. Jim McGovern, D-Mass., chairman of the powerful House Rules Committee, told reporters on Friday.
"We are going to deny them the resources they need to do that, thereby keeping American interests and American people safe all around the world", Mr Pompeo said before leaving to travel for talks on Iran with U.S. allies Saudi Arabia and the United Arab Emirates.
A multinational accord reached by Tehran and world powers in 2015 sought to curb Iran's nuclear ambitions in exchange for sanctions relief.
She said the higher official selling prices (OSPs) of Middle Eastern grades and rising spot premium are also pushing India to buy more USA oil.
In addition to being a close regional partner, Saudi Arabia was also the world's top buyer of US weapons, a fact that Trump has often highlighted in defending his administration's close ties to the kingdom.
"Because I think that Iran potentially has a phenomenal future, and I say that about North Korea too". "Freedom of navigation is paramount", Pompeo tweeted from Jeddah.
Meanwhile, Pompeo says the administration's "maximum pressure" campaign will continue with new sanctions coming Monday. Iran has said it is not interested in a dialogue with Trump.
United States and Iranian governments dispute whether it was in worldwide airspace at the time.
Trump said the new sanctions were in part a response to last week's downing of a USA drone, but would have happened anyway.
Murrison met with senior Iranian officials in Tehran on Sunday.