The attacks on crude-processing facilities at Abqaiq and Khurais resulted in the largest single supply disruption in half a century, and threw into question Saudi Arabia's status as supplier of last resort.
Khamenei's comments came just days after an attack on Saudi Arabian oil infrastructure, which was claimed by Yemeni Houthi rebels but which Trump has indicated was carried out by Iran. Wherever the attacks were launched, however, they believe Iran is to blame.
"At a minimum, we should want to know more information before doing anything".
Those tensions have increased ever since Trump pulled the USA out of Iran's 2015 agreement with world powers that curtailed Iranian nuclear activities and the United States re-imposed sanctions that sent Iran's economy into a nosedive.
US officials say they believe that the attacks came from the opposite direction, possibly from Iran itself rather than Yemen, and may have involved cruise missiles.
Iran's supreme leader Ayatollah Ali Khamenei on Tuesday ruled out negotiations with the USA, as tensions mount between the arch-foes after Washington blamed Tehran for attacks on Saudi oil installations.
Oil prices surged by as much as 19% after the incidents but later came off their peaks.
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The Leader of the Islamic Revolution described the U.S.'s goal by negotiation not as a just solution, but as a means to impose blatant demands, stating that: I've been repeating that the USA seeks is to impose, but they have become so insolent today that they are confessing to it themselves.
President Donald Trump warned the USA was "locked and loaded" to respond to the attacks, as Breitbart News reported. Mr Khamenei told state television: "Iranian officials, at any level, will never talk to American officials".
He withdrew the United States from the nuclear pact between Iran and six world powers and reimposed sanctions that were lifted under the deal in return for Iran curbing its nuclear programme.
That moment aside, the Trump administration has seemed willing-and eager, at times-to start a war with Iran.
Saudi Arabia is China's top oil supplier, year to date.
Although Saudi officials have been cautious about laying blame, Secretary of State Mike Pompeo has directly accused Tehran of playing a key role in the strikes.
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The US and global benchmarks for crude each vaulted more than 14%, comparable to the 14.5% spike in oil on August 6, 1990, following Iraq's invasion of Kuwait.
Mr Trump has stepped up sanctions against Iran since previous year. "That was an attack on Saudi Arabia, and that wasn't an attack on us".
The retired four-star Army general said on "America's Newsroom" that Iran is lashing out in an attempt to force the U.S.to reduce crippling economic sanctions.
"We assure the Saudi regime that our long arm can reach any place we choose and at the time of our choosing", Sarea tweeted."We warn companies and foreigners against being near the plants that we struck because they are still in our sights".
Pompeo and others will travel to Saudi Arabia soon, Trump said.
Saudi Arabia and the UAE have led a military coalition against the Houthis and in support of the government of Yemen's President Abd-Rabbu Mansour Hadi, resulting in what the United Nations calls the world's worst humanitarian disaster.
"It used to be that only governments had air forces, but drones have democratized violence from the sky", says another analyst, Bernard Hudson, a fellow on Persian Gulf security issues at Harvard University, quoted in the Washington Post newspaper.
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