Iranian President Hassan Rouhani on Sunday denounced the presence of foreign forces in the Gulf and said Iran would proffer a peace plan, after arch-foe the US ordered reinforcements to the tinderbox region.
"Foreign forces can cause problems and insecurity for our people and for our region," Rouhani said in a televised speech at an annual military parade.
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Rouhani also said Iran would present a peace plan to the UN in the coming days.
"In this sensitive and important historical moment, we announce to our neighbours that we extend the hand of friendship and brotherhood to them," he said.
Tensions between Iran and the US and its allies have threatened to boil over since May last year when US President Donald Trump unilaterally withdrew from a 2015 nuclear deal and later began reimposing sanctions in a campaign of "maximum pressure".
'Locked and loaded'
The tensions escalated in the wake of devastating September 14 attacks on Saudi oil installations that Washington and Riyadh have, to varying degrees, blamed on Tehran.
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Following the attacks, which caused global oil prices to spike, Trump initially raised the possibility of military retaliation, tweeting that the US was "locked and loaded".
The US later expanded its long list of sanctions against Iran by further targeting its central bank, as Trump indicated he did not plan a military response.
US Defence Secretary Mark Esper announced on Friday that the US was sending reinforcements to Saudi Arabia at "the kingdom's request", while noting the forces would be "defensive in nature" and focused on air and missile defence.
In his speech delivered before a massive military parade on Sunday, Rouhani called on the foreign powers in the Gulf region to "stay away".
"If they're sincere, then they should not make our region the site of an arms race," he said.
"Your presence has always brought pain and misery for the region. The farther you keep yourselves from our region and our nations, the more security there will be for our region."
"We are even ready to ignore their past mistakes... since today the situation is such that the enemies of Islam and the region, meaning America and Zionism, want to abuse the rift between us.
"Our logic is the logic of a Persian Gulf whose security comes from within," said the Iranian president.
Following his speech, the Iranian armed forces paraded their latest equipment, including tanks, missiles and armoured vehicles as Rouhani and top military commanders saluted them.
Rouhani is expected to travel to New York on Monday, a day before general debate kicks off at the United Nations General Assembly.