"Peace with Iran would be the mother of all peace and war with Iran would be the mother of all wars".
Iran faces increased US pressure and looming sanctions after Trump's decision to withdraw the United States from a 2015 worldwide deal over Iran's nuclear programme.
"Remarks by the president. that 'if Iran's oil is not exported, no regional country's oil will be exported, ' were important remarks that reflect the policy and the approach of [Iran's] system", Khamenei's official website quoted him as saying on Saturday.
The National Iranian-American Council (NIAC), which actively supported the nuclear deal with Iran, accused Washington of trying "to exploit Iranian Americans and co-opt the Iranian people to provide legitimacy for the Trump Administration's Iraq War redux for Iran".
Europe opposes the move and has vowed to find ways of maintaining its trade ties with Iran, which under the deal curbed its nuclear programme in exchange for a lifting of sanctions.
Maharaj claims South Africa's best figures since readmission
South Africa's reply seemed especially meek after Dananjaya and Herath's valiant last-wicket stand. South Africa was then routed by Sri Lanka's spinners with Akila Dananjaya taking five for 52.
Trump says ‘inconceivable’ that Cohen recorded conversation about ex-Playmate payment
At this point, Cohen has not has any conversations with prosecutors in the Southern District of NY , one source says. Federal investigators had sought documents related to that payment and similar payments to other women in the raids.
Trump says 'no rush' on North Korea nuclear negotiations
Since the meeting between Mr Trump and Mr Kim on 12 June, there has been little reported progress towards denuclearisation. US and North Korean officials met on the inter-Korean border on Sunday to discuss the return of remains.
But it has since eased its stance, saying it may grant sanction waivers to some allies that are particularly reliant on Iranian supplies. "Are the people of Europe prepared to accept USA national interest dominating the decision-making process in the global economy?" he said in an interview with Euronews.
"The word and even the signature of the Americans can not be relied upon, so negotiations with America are of no avail", Khamenei said.
He claimed it would be an "obvious mistake" to negotiate with the United States as Washington was unreliable.
An Iranian technician walks through the Uranium Conversion Facility just outside the city of Isfahan, Iran, February 3, 2007.
"We should welcome worldwide support and solidarity, and we should be especially grateful for a policy that limits the lifespan of a regime that is suffocating Iranian society", Memarsadeghi said.
Since the United States president pulled Washington out of the nuclear deal, European countries have been scrambling to ensure that Iran gets enough economic benefits to persuade it to stay in the deal.